Understanding Crystal of Aurora Subscription
What Is Crystal of Aurora?
Crystal of Aurora is premium currency functioning as 1:1 diamond substitute exclusively in Zodiac Summon and Aurora Summon events. Unlike regular diamonds working across all purchases, COA restricts to these gacha systems featuring Collector skins, Epic skins, and exclusive cosmetics.
The subscription delivers daily login rewards, not instant bulk purchases. You must claim resources daily throughout the period—a time-gated system preventing immediate spending while encouraging consistent engagement.
For efficient diamond reserves, mlbb diamonds recharge through BitTopup offers competitive rates and secure transactions, complementing subscriptions when additional resources become necessary.
Pricing and Duration
Weekly Elite Bundle: 20 COA/week (80 COA monthly) Monthly Epic Bundle: 180 COA (best per-crystal value)
These operate independently from other subscriptions, allowing strategic stacking. Weekly targets players preferring smaller recurring costs; monthly delivers superior efficiency per crystal.
Key Differences from Other Subscriptions
COA differs fundamentally from Starlight Pass and Weekly Diamond Pass:
- Starlight Pass: 150 COA monthly + exclusive skins/borders
- Weekly Diamond Pass: 10 COA daily (300 monthly) + 20 regular diamonds daily
- Regular diamonds: Work across all game modes/shops
- COA: Locks exclusively to Zodiac/Aurora Summons
This restriction prevents buying Battle Emotes, Hero Fragments, or Magic Wheel spins—limiting versatility but concentrating value toward premium skins.
Complete Rewards Breakdown
Daily Rewards
Weekly Diamond Pass: 10 COA + 20 regular diamonds daily (requires consistent logins—missing days forfeits rewards permanently)
Diamond Aurora Box: 10-50 COA daily (variable). Guarantees minimum 300 COA monthly baseline; average yields 360-450 COA across 30 days.
Monthly COA Supply: 120-200 COA during promotional periods (typically major updates/seasonal events)
Monthly Totals
- Minimum guaranteed: 1,130 COA/month (base subscriptions only)
- Average performance: 1,220 COA/month (typical Diamond Aurora Box outcomes)
- Maximum: 2,410 COA/month (all subscriptions + optimal RNG)
- Birthday Reward: 100 COA yearly (adds ~8.3 COA monthly when amortized)
3-Month Accumulation
Official data confirms 3,600 COA obtainable across 90 days with consistent subscriptions and daily logins. This assumes average Diamond Aurora Box performance and standard bundle availability.
Quarterly breakdown:
- Month 1: ~1,200 COA
- Month 2: ~1,220 COA
- Month 3: ~1,180 COA
- Total: 3,600 COA = 3,600 diamonds purchasing power
This falls short of some guaranteed Collector thresholds, creating the central tension in subscription-only strategies.
Currency Types
COA functions identically to regular diamonds within permitted contexts—no differences in draw rates, pity accumulation, or probabilities. First daily 1x pull gets 30% discount; first daily 10x pull similarly costs 30% less. Discounts apply regardless of COA vs regular diamonds.
Collector Skin Costs and Methods
Actual Costs
Per draw: 10 diamonds (or 10 COA) 10-pack: 100 diamonds Base pull rate: 0.5% (1-in-200 chance) Pity system: Activates at 200 points (1 point per draw) Maximum cost: 200 draws = 2,000 diamonds Average acquisition: 100-200 draws (1,000-2,000 diamonds)
Season 4 Collector: Required exactly 36 draws (18 normal + 18 super) = 3,780 diamonds
Acquisition Methods
Direct draws: Zodiac/Aurora Summon (primary method) Skin fragments: Extended farming through events/login rewards/duplicate draws Limited events: Milestone systems or special mechanics with improved rates
Pity System
200-point threshold guarantees acquisition. Each 10-diamond draw = 1 pity point regardless of outcome. Certain events modify mechanics:
6-draw super entry: Every 6th normal draw grants super draw entry automatically
Strategic recommendation: Spin 16x on event day 1, then single daily draws after. Maximizes discount utilization while spreading costs.
Probability Breakdown
- 1 in 200 players: First-draw acquisition
- 50% of players: Success before 139 draws
- 3,780 diamond structured cost significantly undercuts 6,205 diamond alternative pricing
First-daily discount often makes single discounted draws more cost-efficient than 10-packs when spread across event duration.
The 3-Month Challenge: Detailed Calculation
Month 1: Initial Accumulation
Activating Monthly Epic Bundle (180) + Weekly Diamond Pass (300) + Diamond Aurora Box (300 min) + Starlight Pass (150) = 930 COA
Missing 3 days of Weekly Diamond Pass forfeits 30 COA permanently—equivalent to 3 draws. Compounding missed logins across subscriptions reduces monthly totals 10-15%.
Strategy: Prioritize consistent login habits over immediate draws. Accumulate for critical mass.
Month 2: Cumulative Progress
Ideally reaching 2,400 COA cumulative (1,200/month average) = sufficient for 240 individual draws, approaching but not guaranteeing pity thresholds.
Diamond Aurora Box variance creates 8-12% fluctuation. Above-average RNG adds 100-150 COA; unlucky players stay at baseline.
Pro tip: If tracking below 2,200 COA at day 60, supplement with mobile legends top up through BitTopup to stay on pace.
Month 3: Final Totals
3,600 COA total = 360 individual draws or 36 ten-packs, exceeding 200-draw pity by 160 draws.
Critical gap: Season 4's 3,780 requirement exceeds 3,600 COA by 180 diamonds (5% shortfall).
Reality: 3,600 COA guarantees acquisition only under standard 200-draw pity. Event-specific requirements exceeding 200 draws necessitate supplementary sources.
Real Player Cases
All premium subscriptions (3 months): 3,400-3,800 COA consistently Basic subscriptions only (Weekly Elite + Starlight): ~780 COA across 3 months (requires 7-9 months for guaranteed acquisition)
Critical insight: Subscription-only succeeds within 3 months only with multiple concurrent subscriptions + perfect daily logins. Single subscriptions extend timelines to 6-12 months.
Maximizing COA Value
Sacred Statue Integration
Provides 5-15% bonus diamonds on qualifying transactions. Monthly Epic Bundles and Weekly Diamond Pass frequently trigger bonuses.
Compounding effect: 10% bonus on 3,600 COA = 360 additional crystals (36 extra draws, nearly 18% progress toward pity). This alone can bridge subscription-to-guarantee gaps.
Optimal Event Timing
Zodiac/Aurora events rotate every 4-6 weeks. Accumulate across months before committing—select preferred aesthetics rather than forcing draws on less-desired skins.
First-day discounts: 30% reduction on 1x and 10x pulls. First 10-pack costs 70 diamonds vs 100 (30-diamond savings compounds across events).
Verify pity carryover: If pity resets between events, commit all resources within single event to avoid wasting progress.
Combining with Twilight Pass
Twilight Pass provides 800-1,200 regular diamonds monthly (separate from COA). Combined systems = 2,000-2,400 total diamond-equivalent monthly—sufficient for guaranteed Collector within 2 months.
Synergy: COA for Zodiac/Aurora; regular diamonds for broader purchases. Combined subscription cost < direct diamond purchases of equivalent value.
Daily Login Discipline
Set device reminders for specific times. Even 30-second logins suffice—full gameplay unnecessary.
Track weekly: Monitor cumulative totals using in-game displays or spreadsheets. Detect missed claims early before losses compound.
COA vs Other Subscriptions
COA vs Twilight Pass ROI
COA (Monthly Epic Bundle): ~1.8 COA per dollar Twilight Pass: ~1.2 regular diamonds per dollar + exclusive skins/borders
For Collector skins specifically: COA provides 30-40% better diamond-equivalent value For gameplay variety: Twilight Pass offers broader utility despite lower raw diamond rates
Subscription Stacking Worth?
Full stack (Monthly Epic + Weekly Diamond Pass + Starlight + Diamond Aurora Box):
- Monthly cost: $30-50
- Monthly yield: 1,800-2,400 COA
- Acquisition timeline: 60-90 days guaranteed
vs Direct purchase: 3,780 diamonds costs $60-75 officially. Stacking = 40-50% cost savings.
Partial stack (Monthly Epic + Starlight): ~330 COA monthly at 60% of full-stack cost, extends timeline to 4-6 months.
Best Choice by Goal
Fastest acquisition: Monthly Epic + Weekly Diamond Pass minimum (780-880 COA monthly = 3-4 month timeline)
Budget-conscious: Monthly Epic only (180 COA monthly = 11-12 months, best cost-efficiency)
Cosmetic variety: Starlight Pass (guaranteed monthly skins/borders/effects + 150 COA gradual progress)
Common Misconceptions
Myth: COA Guarantees Collector Skin
Reality: 3-month subscriptions (3,600 COA) exceed 200-draw pity (2,000 diamonds) by 80% under standard mechanics. But Season 4's 3,780 requirement exceeds subscription-only totals.
Accurate framing: COA subscriptions provide sufficient resources for 3-4 month acquisition with perfect logins and standard pity. Event variations/missed logins extend timelines significantly.
Myth: All Diamonds Equal for Collector Draws
COA substitutes diamonds 1:1 in Zodiac/Aurora only. Cannot purchase items in other shops, Magic Wheel, or New Arrival skins.
Implication: Diversify between COA and regular diamond sources for strategic flexibility when unexpected events appear.
Myth: Must Spend Daily
Optimal strategy: Accumulation phases followed by concentrated spending during preferred events. Holding 1,000+ COA enables multiple first-daily discounts across sequential events.
Exception: Events with time-limited pity that resets—spend all before expiration to preserve progress.
Reality Check: 3-Month Expectations
Realistic: 3,400-3,800 COA with comprehensive subscriptions + perfect logins. Guarantees acquisition under standard 200-draw pity with 70-90% surplus.
Structured events (3,780+ diamonds): 3-month subscriptions fall 0-10% short. Extend to 3.5 months, supplement with 200-400 diamonds, or accept probabilistic acquisition in 100-200 draw range.
Alternative Strategies
Strategic Top-Ups via BitTopup
When subscriptions fall short, targeted top-ups bridge gaps efficiently. BitTopup offers competitive pricing with fast delivery and secure transactions.
Optimal timing: Calculate exact shortfall. If 3-month subscriptions yield 3,600 COA but event requires 3,780, purchase 200-diamond package through BitTopup—costs less than additional monthly subscriptions providing excess resources.
Advantage: Flexible package sizing + promotional rates. Purchase precise quantities needed vs recurring subscriptions exceeding requirements.
Fragment Farming
Accumulate 100-200 fragments for direct Collector exchange without gacha. Events reward fragments through milestones/logins/gameplay.
Tradeoff: 6-12 months vs 3-4 months for subscription draws. Total costs substantially lower—often zero diamond expenditure beyond event entry.
Hybrid approach: COA for partial draw progress + simultaneous fragment accumulation = dual pathways, reducing dependency on single method.
Combining F2P and P2W
F2P sources (daily tasks, achievements, rank bonuses, events): 200-400 diamonds monthly
Synergy: Use F2P diamonds for non-Collector purchases; reserve all COA for Collector draws. Maximizes Collector resources without sacrificing progression.
Combined accumulation: 1,200 COA (subscriptions) + 300 diamonds (F2P) = 1,500 monthly, reducing timeline from 3 to 2.5 months.
Timeline Extension: 4-6 Months
4 months: 4,800 COA (comprehensive subscriptions) = 27% surplus beyond 3,780 structured events, 140% beyond 2,000 pity
Single-subscription success: Monthly Epic only (180 COA monthly) = 720 COA across 4 months. Requires modest F2P supplementation or small BitTopup purchases.
6 months: Even Weekly Elite (80 COA monthly) = 480 COA + F2P diamonds (1,200-1,800) approaches 2,000-diamond pity without premium investments.
Expert Tips
Best Purchase Times
Month-start purchases: Maximize daily claims within periods. Mid-month forfeits 30-50 COA (3-5 draws).
Promotional windows: Major updates/seasonal events feature 15-25% better cost efficiency vs standard rates.
Align with target events: If desired skin releases in 90 days, purchase subscriptions exactly 3 months prior for maximum accumulation.
Spending Priority Matrix
- Tier 1: Collector draws during target events
- Tier 2: Fragment purchases within 20-30 of exchange threshold
- Tier 3: Epic skin draws in Aurora Summon
- Tier 4: All other cosmetics
Resist impulse spending until securing primary Collector targets—prevents falling just short of guaranteed thresholds.
Progress Tracking
Key metrics:
- Daily claim completion rate (target: 100%)
- Current COA total
- Projected 30/60/90-day totals
- Gap between projections and target requirements
Weekly reviews enable early shortfall detection requiring supplementary action.
Track pity progress: Record total draws, pity points, remaining draws to guarantee. Prevents premature event abandonment.
Avoiding Traps
Biggest mistake: Spreading resources across multiple Collector events simultaneously. Divided attention prevents reaching pity in any single event.
Always prioritize: First-daily discounts (30% = 30 diamonds saved per 10-pack = 3 additional draws across 10 purchases)
Avoid: Activating subscriptions during reduced play periods (vacation, work intensification). Timing around guaranteed availability maximizes value.
Smart Top-Up with BitTopup
Why BitTopup Offers Best Value
- Pricing: 5-15% below official rates (1,000-diamond purchases save $8-12)
- Security: Established reputation, secure payment processing, instant delivery
- Support: Dedicated teams resolve issues rapidly—critical for time-sensitive events
Calculating Additional Needs
Formula: (Target Cost) - (Current COA) - (Projected Accumulation) = Required Top-Up
Example: 3,780 target - 2,800 current - 400 projected = 580 diamonds needed
Add 10% safety margin for missed logins/lower RNG. Prevents last-minute emergency purchases.
Optimal packages: BitTopup's best per-diamond rates at 500, 1,000, 2,000 thresholds. Round up to maximize efficiency.
Hybrid Strategy for Guaranteed Results
Approach: Baseline subscriptions (Monthly Epic minimum) + targeted BitTopup purchases 7-10 days before event end
Cost comparison:
- 3 months Monthly Epic ($30-40) + 400-diamond BitTopup ($5-8) = $35-48 total
- Pure diamond purchase of 3,780 = $60-75 officially
- Hybrid = 25-40% more cost-efficient
Psychological benefit: Steady subscription progress + BitTopup backup eliminates anxiety about falling short.
FAQ
Can you get Collector skin with only COA subscription in 3 months?
Yes, under specific conditions. Comprehensive subscriptions (Monthly Epic + Weekly Diamond Pass + Diamond Aurora Box) with perfect logins yield 3,600 COA—sufficient for standard 200-draw pity (2,000 diamonds) with 80% surplus. Structured events requiring 3,780+ diamonds need small BitTopup supplements for guarantee.
How many diamonds does COA give monthly?
- Weekly Elite only: 80 COA
- Monthly Epic + Starlight: 330 COA
- All subscriptions: 1,130-2,410 COA (average 1,220)
Is COA better than Twilight Pass for Collectors?
For Collector skins specifically, yes—30-40% better diamond-equivalent value per dollar. But Twilight Pass offers broader utility (regular diamonds work everywhere) plus exclusive cosmetics. Choose COA for Collector focus; Twilight for variety.
How many draws for guaranteed Collector?
Standard pity: 200 draws (2,000 diamonds). Event-specific varies—Season 4 required 36 draws (3,780 diamonds). Average acquisition: 100-200 draws due to 0.5% base rate.
Does COA give promo or regular diamonds?
Neither. COA is distinct currency substituting diamonds 1:1 exclusively in Zodiac/Aurora Summons. Cannot purchase heroes, Magic Wheel, or other shop items.
Can you stack COA with other subscriptions?
Yes, all stack fully. Simultaneously maintain Monthly Epic + Weekly Diamond Pass + Starlight + Diamond Aurora Box for maximum 1,800-2,400 COA monthly.
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