Runeterra Relics
Yuumi banner
Bandle City region iconTargon region icon
Good (7/10)

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
  • Disciple of Shadows icon

    Reduces Yuumi's cost based on allies in play. When played as an attachment, it bypasses the downside of dealing 3 damage to allies.

  • Galeforce icon

    Grants Scout. The recall penalty at round end is completely ignored while Yuumi remains attached to a unit.

  • The Beast Within icon

    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

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
  • Perfect Hex Core icon

    Generates a 0-cost targeted spell every round, which consistently triggers Yuumi's Fated keyword and her 4-star Barrier effect.

  • Spirit of the Buhru icon

    Grants Overwhelm, Quick Attack, and Fury to 1-cost allies.

  • Galeforce icon

    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

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
  • Perfect Hex Core icon

    An excellent alternative that generates a 0-cost targeted spell every round, consistently triggering Yuumi's Fated keyword and her 4-star Barrier effect.

  • Black Shield icon

    Provides crucial protection against hard removal, preventing the attached unit from being recalled or destroyed, which would reset Yuumi's accumulated stats.

  • Crownguard Inheritance icon

    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.

  • Icon for We Got This

    We Got This

    Allies have FatedFated.
  • Icon for So Many Friends

    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.

  • Icon for We Got This II

    We Got This II

    Allies have FatedFated. When you target a FatedFated ally, grant it an additional +1|+1.
  • Icon for Phalanx

    Phalanx

    When you target an ally, give it BarrierBarrier 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.

  • Icon for Manaflow

    Manaflow

    Game Start: Get a mana gem.
  • Icon for The Power Of Friendship!

    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.