Yuumi
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Good (7/10)
High Investment Required
Epic Relics
Players disagree about Yuumi's playstyle. Some consider her attachment mechanics highly engaging and powerful, while others find her gameplay repetitive and overly reliant on specific Epic relics to function in high-difficulty content.
Optimal Attached Aggression
Reduces Yuumi's cost based on allies in play. When played as an attachment, it bypasses the downside of dealing 3 damage to allies.
Grants Scout. The recall penalty at round end is completely ignored while Yuumi remains attached to a unit.
Grants +1|+1 and Overwhelm to all allied units with a subtype, including her generated Poros and Faes.
Strategy
This is the premier build for maximizing Yuumi's attached playstyle. Disciple of Shadows allows for a Turn 1 deployment by leveraging her starting Poros to reduce her cost to 0, without inflicting the area-of-effect damage on her host.
Galeforce provides relentless offensive pressure through the Scout keyword, as Yuumi's attachment mechanic completely negates the relic's recall penalty. The Beast Within transforms her small generated units into significant threats with Overwhelm, allowing the deck to go wide and push substantial Nexus damage alongside Yuumi's primary attached unit.
C6 Husk Scaling
- Used here to intentionally destroy allied Poros upon playing Yuumi unattached.
Converts the destroyed Poros into Husks that carry Yuumi's stats.
Provides valuable keywords to the 1-cost Husks and Poros.
Strategy
This build is designed specifically to capitalize on Yuumi's 6-star power. By playing Yuumi unattached, Disciple of Shadows destroys the starting Poros to generate Husks via Succubus's Brand.
The 6-star power then buffs these Husks to match the strongest ally's stats. When the next unit is played, it consumes the massive Husks, resulting in extreme exponential stat scaling that can secure a victory by Turn 3.
Zoe Specialized
Generates a 0-cost targeted spell every round, which consistently triggers Yuumi's Fated keyword and her 4-star Barrier effect.- Grants Overwhelm, Quick Attack, and Fury to 1-cost allies.
- Provides the Scout keyword for repeated attacks.
Strategy
This build is tailored for the 10-star Zoe adventure, prioritizing immediate defensive utility and aggressive scaling to match Zoe's rapid pace.
Perfect Hex Core is favored here over slow-scaling options because it provides an immediate burst-speed Barrier (via Yuumi's 4-star power) to protect key units from Zoe's aggressive board. Spirit of the Buhru ensures that early 1-cost units can trade effectively and push damage.
Ranger's Command Variant
Grants Quick Attack and Scout, serving as a direct upgrade to Galeforce.
Provides Challenger, Tough, and Overwhelm.- Provides essential cost reduction to establish Yuumi early.
Strategy
This build utilizes Ranger's Command as a strict upgrade to Galeforce, providing both Quick Attack and Scout. Full Build complements this by adding Challenger, Tough, and Overwhelm, allowing Yuumi's attached unit to systematically dismantle the enemy board while pushing Nexus damage.
Other Relic Options
- An excellent alternative that generates a 0-cost targeted spell every round, consistently triggering Yuumi's Fated keyword and her 4-star Barrier effect.
Provides crucial protection against hard removal, preventing the attached unit from being recalled or destroyed, which would reset Yuumi's accumulated stats.
Can be utilized effectively if playing an unattached Yuumi build, generating a Rally upon leveling up.
Avoid relics that rely on 'Play' or 'Summon' triggers (such as Star Gem, Golden Spatula, or Voidborne Carapace) if you intend to use Yuumi's Attach mechanic, as attaching does not count as summoning the champion to the board.
Constellation
Yuumi requires significant constellation investment to tackle high-difficulty adventures. While her early nodes provide essential Poro generation for board presence, her true potential and survivability are locked behind her 4-star and 6-star upgrades.
We Got This
Allies have Fated.
So Many Friends
+1 Starting Mana. Game Start: Summon two random 1 cost Poros.Review
Provides crucial early board presence by summoning two Poros at game start, often allowing her to out-swarm early encounters and providing immediate targets for attachment.
We Got This II
Allies have Fated. When you target a Fated ally, grant it an additional +1|+1.
Phalanx
When you target an ally, give it Barrier this round.Review
A massive defensive upgrade. Granting Barrier whenever you target an ally synergizes perfectly with Perfect Hex Core and her inherent attachment mechanics, allowing her to stall and protect key units against aggressive enemy boards.
Manaflow
Game Start: Get a mana gem.
The Power of Friendship!
Round Start: Grow all allies to the Strongest ally's stats this round.Review
Fundamentally transforms her scaling potential. This power grows all allies to the strongest ally's stats, enabling massive board-wide stat growth and highly synergistic 'husk' strategies.
Gameplay Tips
- Bypassing Negative Keywords
When Yuumi attaches to an ally, she only transfers positive keywords. Negative effects from relics, such as the recall penalty from Galeforce or the Ephemeral tag, are completely ignored. This makes these relics exceptionally powerful on her.
- The Small Stuff Advantage
Yuumi excels in adventures featuring the 'Small Stuff' mutator (which sets unit stats to 1/1). Because her attached stats are applied as a buff on top of the base stats, her units remain massive while the enemy board is severely weakened.
- Avoiding Obliteration and Transformation
Be extremely cautious against encounters with Obliterate, Entomb, or Polymorph effects (such as the Lissandra or Lulu adventures). If the host unit is obliterated or transformed, the attached Yuumi is permanently destroyed or neutralized as well. In these specific matchups, it is often safer to play Yuumi unattached.
- Cost Reduction Mechanics
Disciple of Shadows is the premier relic for Yuumi because playing her as an attachment bypasses the relic's area-of-effect damage to allies, while still granting the massive cost reduction based on the number of units in play.
- Play and Summon Effects
Relics that trigger on "Play" or "Summon" (like Star Gem or Golden Spatula) do not activate when Yuumi is attached to an ally. Stick to relics that provide static keywords or continuous effects.