Periodically, when Yuumi strikes a champion with an attack or ability, she restores health to herself and the next ally she Attaches to.

While Attached, Yuumi generates a special bond with her allies. The ally with the strongest bond enhances Yuumi's abilities while she is Attached to them.

Yuumi summons an errant missile that deals magic damage to the first enemy and Slows the target for %.

If cast while Attached, Yuumi can control the missile using her mouse for a short period before it accelerates in a straight line. The accelerated missile deals magic damage and Slows the target for % for seconds, instead.

Best Friend Bonus: Prowling Projectile's Slow will always be enhanced and hitting an enemy champion also grants them magic damage On-Hit On-Hit for seconds.

The bonus On-Hit damage can be increased by % based her ally's Critical Strike Chance.

Passive: While on her Best Friend, Yuumi gains an additional % Heal & Shield Power and her ally also restores health On-Hit On-Hit.

Active: Yuumi dashes to an ally champion and Attaches to them. While Yuumi is Attached, she follows her partner's movement and is Untargetable except from towers.

Immobilizing effects on Yuumi place this Ability on a second Cooldown.

Yuumi shields herself, blocking damage and gains % Attack Speed for seconds. While the shield persists, the target also gains % Move Speed.

If Yuumi is Attached, this Ability affects her ally instead and also restores Mana to them, increased by up to % based on the target's missing Mana.

Yuumi channels for seconds, launching magical waves affecting both teams. If initially cast while Attached, Yuumi can steer the waves to follow her mouse.

Enemies struck are dealt magic damage and Slowed by % for seconds, increased by % per wave hit.

Ally champions are healed for health per wave. Excess healing is converted to a Shield instead.

Best Friend Bonus: For her Best Friend, the heal is increased to health.

Casting You and Me! will locks the waves in the current direction.
Yuumi can move and cast Zoomies while channeling.