Robin's Role in Summoner Meta
Robin (v2.2) reshaped team-building with Concert State mechanics that synergize with frequent attackers. Her kit delivers 50% damage boost (100% uptime, 3-turn cycles), 20% CRIT DMG from Talent, and Physical DMG at 120% Robin ATK with 100% CRIT Rate/150% CRIT DMG.
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Summoner Meta Definition
Summoner meta centers on characters generating extra damage instances beyond standard turns—follow-up specialists and persistent summons. Robin's Concert State ATK buff (22.8% Robin ATK + 200) scales with attack frequency. Her Talent grants 2 Energy per ally attack, creating feedback loops where more attacks = faster Ultimates.
Core Mechanics: Concert State
Ultimate costs 160 Energy. Base stats (Lv80): 1280 HP, 640 ATK, 485 DEF, 102 SPD. The 121 SPD breakpoint optimizes rotation timing.
Energy generation:
- Skill: 35 Energy
- Basic ATK: 20 Energy
- Ally attacks: 2 Energy each
- Ultimate: 5 Energy on activation
- Sequential Passage: +5 Energy on Skill
With ERR Rope: 17-25 ally attacks needed. Without: 28-38 attacks. Standard rotation: Skill > Basic > Basic.
Why Robin's Essential
Robin converts high action frequency into proportional damage. Concert State Physical DMG adds meaningful personal contribution. At 3500+ ATK, 100% CRIT Rate guarantee allows full ATK focus. Her 48.83% Memory of Chaos usage reflects unmatched team-wide offensive scaling.
Robin E1 Breakdown
E1 (Land of Smiles): 24% All-Type RES PEN to allies during Concert State. Testing with Dr. Ratio shows E0 = 116,246 damage vs E1 = 150,282 damage—29.27% increase.
Mechanical Changes
E1 focuses purely on damage via resistance penetration. Against 30% resistance enemies, 24% RES PEN reduces effective resistance to 6%. No changes to energy generation, skill points, or rotation.
Energy Impact
E1 doesn't modify energy rates, but 29% more damage can shorten combat, potentially reducing attack opportunities for energy generation in wave content. Standard thresholds unchanged: 17-25 attacks (ERR Rope) or 28-38 (no ERR).
Combat Performance
Memory of Chaos testing shows 0.5-1 cycle improvement typically, reaching 1.5-2 cycles against high-resistance enemies. E1 shines in sustained damage scenarios with high Concert State uptime. Diminishing returns when paired with other resistance-shred supports (can't go below 0%).
Signature Light Cone (S1) Analysis
Flowing Nightglow S1: 48.83% usage, 8.77 avg cycles. Cantillation stacks 5% ERR (max 25% at 5 stacks). Cadenza grants 48-96% ATK to wearer, 24-40% DMG to allies for 1 turn.
ERR stacking reduces required attacks to 12-15 in optimal conditions. Buy oneiric shards global via BitTopup for secure transactions.
Stats and Passive
48-96% ATK bonus pushes Robin toward 3500+ ATK threshold. 24-40% ally DMG stacks multiplicatively with her 50% Skill boost. 1-turn Cadenza duration aligns with Ultimate activation for maximum buff overlap.
vs 4-Star Options
- But the Battle Isn't Over S1: 14.86% usage, 9.29 cycles (0.52 slower)
- For Tomorrow's Journey S5: 29.13% usage, 8.69 cycles (0.08 slower)
S1's 25% ERR reduces Ultimate charge ~20-25%, enabling one extra Ultimate per 3-4 cycles. For Tomorrow's Journey performs competitively as budget option.
Versatility
Flowing Nightglow's passive requires Robin's Concert State mechanics—limited transfer to other supports. Cadenza's 1-turn duration doesn't suit different Ultimate timings. Functions as Robin-exclusive Light Cone.
E0S1 vs E1S0 Comparison
E0S1 prioritizes energy/ATK (8.77 cycles). E1S0 sacrifices energy for 24% damage amp. Optimal choice: consistent uptime (S1) vs amplified per-rotation damage (E1).
Topaz + Robin Teams
Topaz generates 8-12 ally attacks per rotation. High frequency reduces S1's energy advantage—even E1S0 achieves sufficient uptime. E1's 24% RES PEN amplifies each Numby follow-up. Damage differential narrows at 25+ attacks/cycle.
Skill Point Economy
Neither modifies SP consumption. Optimal rotation (Skill > Basic > Basic) unchanged. S1's improved uptime reduces pressure for Skill spam. E1S0 requires precise energy management without batteries like Huohuo (32 Energy to Robin).
Ultimate Frequency
E0S1: 75-85% Concert State uptime vs E1S0: 60-70% (4-star LCs). 15-20% uptime gap = more consistent damage. Pure Fiction favors E0S1's wave-start activation. Memory of Chaos continuous encounters favor E1S0's per-rotation damage.
Damage Calculations
Dr. Ratio testing: E0 = 116,246 damage, E1 = 150,282 (+34,036, 29.27% increase).
Calculation Method
Resistance formula: Final Damage = Base × (1 + DMG Bonuses) × (1 - (Enemy RES - RES PEN))
30% resistance enemy:
- E0: Base × Buffs × 0.70
- E1: Base × Buffs × 0.94 (6% remaining)
- Multiplier: 0.94/0.70 = 1.343 (34.3% increase)
S1 calculation: Base × (1 + 0.50 Skill + 0.24-0.40 S1) × Resistance. At 40% S1: 1.90× vs E0's 1.50× = 26.7% increase pre-resistance.
Team DPS
Robin's Concert State Physical DMG: 120% ATK, 100% CRIT, 150% CRIT DMG. At 3500 ATK = ~6,300 damage/activation.
- E0S1 (16 activations): 100,800 damage
- E1S0 (13 activations): 81,900 damage
- Differential: 18,900 favoring E0S1
Team dealing 400k total with E0 gains 96k from E1's 24% increase vs S1's energy/ATK advantages.
Stat Breakpoints
3500+ ATK threshold maximizes Concert State buff. S1's 48-96% ATK helps reach this with easier relics. Energy breakpoints: 17-25 (ERR Rope), 12-15 (ERR + S1), 28-38 (no ERR). Teams with 20+ attacks/cycle favor E1. 15-20 attacks favor S1.
Team Synergy
Topaz/Numby Follow-Ups
Single Topaz rotation = 8-12 attacks, rapidly charging 160 Energy. High frequency reduces S1 advantage. E1's RES PEN amplifies each follow-up (60%+ of total damage). S1's 1-turn buff aligns with burst windows.
Action Advance
Action advance compresses attacks, creating energy spikes. S1's ERR stacking synergizes—compressed sequences build Cantillation while generating base energy. E1 provides consistent value regardless of turn order.
Future Scalability
Future summoners likely continue high-frequency patterns. E1's universal RES PEN scales with any damage dealer—future-proof. S1 benefits Robin only. As teams hit 25+ attacks/cycle, energy becomes less constraining, favoring E1's damage scaling.
Investment Framework
Progression Stages
Early-game (pre-Equilibrium 5): Avoid both. E0 + For Tomorrow's Journey S5 = 90%+ value.
Mid-game (Equilibrium 5-6): S1 benefits more—energy advantages compensate suboptimal relics.
Endgame (MoC 12 clears): E1 maximizes value—high base damage amplifies 24% increase.
Stellar Jade Cost
Rerun: Sept 9-Oct 2, 2025. Next: Jan 14-Feb 5, 2025.
- E1: 90-180 pulls (14,400-28,800 Jade)
- S1: 80-160 pulls (12,800-25,600 Jade)
Similar costs make decision performance-based. Opportunity cost: E1/S1 vs new character (usually new character wins).
F2P/Low-Spender Paths
F2P: E0S0 + For Tomorrow's Journey S5. Save Jade for roster expansion.
Monthly Pass: Consider S1 during reruns if no priority characters. QoL improvements reduce relic pressure.
Dolphin: E1 if already 3500+ ATK with 4-star LCs and 20+ attacks/cycle. Otherwise S1.
Common Mistakes
Myth: E1 Always Beats S1
Eidolons > Signatures oversimplifies Robin. E1 = pure damage, no mechanical changes. S1 solves multiple problems (energy, ATK, damage). Context matters: energy-constrained teams, suboptimal relics, consistent uptime needs favor S1.
Light Cone Flexibility
Flowing Nightglow's specialization isn't a flaw—it maximizes Robin performance. E1 provides zero value to others; S1 has theoretical transfer (limited practical use). E1 benefits any Robin team; S1's value varies by composition.
Skill Point Trap
E1 doesn't modify skill points—only RES PEN. Rotation unchanged: Skill > Basic > Basic = 1 SP per 3 turns at all Eidolon levels. SP issues require team comp changes, not E1.
Testing Results
Memory of Chaos
- Flowing Nightglow S1: 8.77 cycles
- But the Battle Isn't Over S1: 9.29 cycles (-0.52)
- For Tomorrow's Journey S5: 8.69 cycles (-0.08)
0.52 cycle gap = 15-20 seconds, can determine MoC 12 success. E1S0 + For Tomorrow's Journey nearly matches S1 (0.08 variance).
Pure Fiction
S1's 26,957 avg score sets ceiling. E0S1 enables wave-start Concert State. E1S0 experiences energy gaps between waves (1-2 turn delays). Wave content amplifies S1 advantages, minimizes E1 benefits (lower enemy resistance).
Community Data
Flowing Nightglow: 48.83% usage. But the Battle: 14.86%. For Tomorrow's: 29.13%. Community recognizes For Tomorrow's as superior 4-star. Apocalyptic Shadow: 3,402 avg score for S1 users—dominance even in E1-favorable (resistance-heavy) content.
Final Verdict
Recommendation Matrix
F2P: Neither. E0 + For Tomorrow's Journey S5 = 90%+ value.
Monthly Pass: S1 if one guaranteed pity available. QoL > raw performance.
Dolphin: E1 if 3500+ ATK with 4-star LCs + 20+ attacks/cycle. Else S1.
Whale: Both for maximum performance.
Summoner Specialists: E1 for long-term value as meta evolves toward higher attack frequencies.
Long-Term Value
Meta trends favor E1—as attack frequency increases, energy constraints diminish while damage amp grows valuable. S1's energy has diminishing returns at 25+ attacks/cycle. But S1's immediate impact exceeds E1's theoretical future advantages for most players.
Stellar Jade Acquisition
- Daily Training: 60/day (1,800/month)
- Nameless Honor: ~680/42 days
- Monthly Pass: 300 immediate + 90/day (2,700/month)
- Events: 420-800 per event (2-3/version)
- MoC + Pure Fiction: 2,400/month (all floors)
F2P: 6,000-8,000/month = 2-3 months for character pity. Monthly Pass: 9,000-11,000/month = 30-40% faster.
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FAQ
Is Robin E1 or S1 better for summoner teams?
S1 performs better for most teams: 8.77 avg cycles vs 9.29 for E1 with 4-star LCs. S1's 25% ERR + 48-96% ATK solves energy/stat challenges; E1 only amplifies damage via 24% RES PEN. Choose S1 unless you generate 25+ attacks/cycle and hit 3500+ ATK with 4-star LCs.
How much damage does E1 add?
24% ally damage via RES PEN during Concert State. Dr. Ratio testing: 29.27% total improvement (116,246 → 150,282 damage). Varies by enemy resistance—higher resistance = greater benefit.
What stats does S1 give?
5% ERR/stack (max 25% at 5 stacks), 48-96% ATK to wearer, 24-40% DMG to allies for 1 turn. Improves uptime, Concert State buff potency, team damage.
Does E1 improve skill points?
No. E1 only grants 24% RES PEN. SP consumption unchanged: Skill > Basic > Basic = 1 SP per 3 turns at all Eidolons. Address SP issues via team comp, not E1.
Can Robin work with F2P light cones?
Yes. For Tomorrow's Journey S5: 8.69 cycles vs S1's 8.77 (0.08 difference) = 90-95% signature performance at zero cost. Prioritize E0 + For Tomorrow's over E1/S1.
Which gives better uptime?
S1 via 25% ERR reduces attacks needed from 28-38 to 12-15, enabling 15-18 Ultimates/encounter vs 12-14 for E1 with 4-star LCs. 75-85% Concert State coverage vs 60-70% for E1S0.
