Chelsea is a Defense crew member who enables Leaders to inflict [Erode] with their Hits. She also boosts her own Max HP, ATK and DEF as she generates and retrieves cards, and she is a good fit for existing Black-card teams or Erode teams.
Playstyle and Key Mechanics
Chelsea is a Defense Support built around generating and retrieving cards, especially Black cards and [Dredge]. Her kit revolves around adding derivative cards to her hand and stacking Max HP, ATK and DEF through card generation and retrieval.
Main Cards:
Her first card is [Exegesis], a purple card where she chooses 1 from [Wellspring], [Elixir] and [Abyssal Draw] and adds it to her hand. Afterward, she generates 1 [Reverengy] at the bottom of the deck.
The next card is [Dredge], a black card that, when obtained, inflicts [Corrupt] on all enemies and draws 1 card, prioritizing the Leader’s card. It’s discarded after 10 secs and cannot be [Destroyed] or [Converted].
Then her ultimate [Scrying Mirror], where she deploys [Mirror of Revelation] for 6 secs, rebounding 50% of DMG taken during that time and when it expires, it deals Reverengy DMG once to all enemies. The DMG scales by her DEF and the sum of all allies’ Max HP.
Derivative:
[Wellspring] - Adds up to 3 Black cards from the deck to your hand. If there are no Black cards, it draws 1 card.
[Elixir] - Heals an ally for 50% of Max HP and adds up to 3 of that ally’s 3-Cost cards from the discard pile to your hand.
[Abyssal Draw] - Generates 3 [Shadowcraft] in your hand, which can exceed hand size.
[Shadowcraft] - Casts an Arcane Spell on the target, dealing DMG once and inflicting [Injure] and [Curse]. Special Effect [Darkest Hour] triggers after using this card 13 times.
Investment
Chelsea’s Awakenings mostly scale her own stats and the team’s Reverengy damage, and they work best when [Dredge] is cycling through her hand and discard pile.
Awakening 1 - For each card generated, increase self Max HP. For each card retrieved, increase self ATK and DEF.
Awakening 2 - Whenever obtaining [Dredge], increase allies’ Reverengy DMG dealt.
Awakening 4 - When [Dredge] is in your hand, increase hand size by 1. When [Dredge] is in the discard pile, gain 0.1 Cost per second. This effect stacks.
Awakening 5 - For each Black card in the deck, the discard pile and your hand, increase the Leader’s ATK and DEF.
Resonance
Resonance 1 — For each Black card generated, get a 10% chance to draw 1 card.
Resonance 2 — When [Dredge] is in your hand, the Leader’s every hit inflicts [Erode], excluding damage effects.
Resonance 4 — For each allied [Angel] on the field, increase self Max HP by 100% and take 50% DMG in their place. If there are no allied [Angels], increase all allies’ Max HP by 20%.
Resonance 5 — When using [Scrying Mirror], add 1 [Dredge] from the deck or the discard pile to your hand.
Synergies
❗ ❗ ❗ The Synergies mentioned here are merely samples. Taking their core mechanics as an example, you can use many other characters as replacements or other synergies. ❗ ❗ ❗
Ushana - Chelsea is Ushana’s BIS support, providing Card LOOP, which enables the team to stack as much Reverengy in deck, where A2 Ushana benefits most
Joshua - Capable of Multi-hitting, which takes advantage of Dredge in hand.
Gear and Affixes
Some examples of overall good equipment choices for Chelsea. For specific picks, please check the respective teams.
UR Exile Code: Using [Leader Skill] enables the next Purple card to deal 50% more damage.
UR Space Tangent: Draws 1 more card at the start of battle prioritizing own Ultimate card.
UR Outer Stars: When a [Nova], [Elemental Nova] or [Supernova] is generated, increase all allies' ATK by 1% up to a maxixmum of 30%
UR Critical Unpredicted Prototype: For each [Reverengy] in the deck, increase the Final DMG of Red cards by 5% up to a maximum of 100%.
SSR Nightfall Starquest: Playing a Purple card has a 10% chance to generate a [Nova] in your hand. The trigger rate stacks.
SR Viscera Collector MK 0: Using [Leader Skill] restores 0.4 Cost. This effect stacks.
R Mass Projector: Using [Leader Skill] increases ATK by 1.5%. This effect stacks.
R Magic Wand: Playing a Purple card has a 20% chance to restore 1 Cost. The trigger rate stacks.
Armor:
UR Cactus Plate Armor: When using a 2+ Cost Green card, gain 0.5 Cost.
SSR Crimson Prophecy: Heal self for 5% of the DMG dealt by [Erode] and [Corrode].
SSR Simulated Stars: Using [Leader Skill] restores 5% HP. This effect stacks.
SSR External Memory Matrix: Max damage taken per hit is 33% of Max HP.
SSR Black Rock Armor: Reduces wearer's final DMG taken by 10%. This effect stacks.
SSR High Dimension Construct: Generating a Black Card restores 5% of Max HP. This effect stacks.
SR Resonance Fiber: When own skill card is used, restores 2% of Max HP.
Accessory:
UR World Line ß Box: Draws a card whenever you encounter a wave of enemies, prioritizing wearer's skill cards.
UR Radiant Galaxy: When drawing [Reverengy] from the deck, destroy it and generate a [Nova] in your hand.
SSR Stellar Ember: [Nova], [Elemental Nova], and [Supernova] deal 20% more damage. This effect stacks.
SSR Mobius: Cards in your hand are replenished 0.25 seconds faster. This effect stacks.
SSR Divinity Seal: Gains 2 Cost at the battle's beginning. This effect stacks.
SSR Fengshui Tactical Drone: For every 8 cards used, increases ATK or DEF by 2%, up to a maximum of 50%.
Affixes
Using [Leader Skill] restores 0.2/0.3 Cost. This effect stacks.
Using [Leader Skill] restores 2/3% of own Max HP. This effect stacks.
Using [Leader Skill] increases own ATK by 0.5/1%. This effect stacks.
Using [Leader Skill] increases own DEF by 0.5/1%. This effect stacks.
Increases own ATK by 1/3%. This effect stacks.
Increases own ATK by 10/30. This effect stacks.
Increases all own trigger rates by 1/5%. This effect stacks.
Restores 0.01/0.02 Cost per second. This effect stacks.
Increases final DMG dealt by 2/5%. This effect stacks.
Gains [Hyperarmor] for 1 second when using own skill cards. This effect stacks.
Playing a Yellow Card restores 0.05/0.1 Cost. This effect stacks.
Playing a Yellow Card has a 5/10% chance to draw a card. The trigger rate stacks.









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