Innate: Periodically, Yuumi's next basic attack, which has an uncancelable windup and gains 50 bonus range, ability hit against enemy champions, or Final Chapter Final Chapter hit on ally champions while attached attached, will heal her for 25 − 110 (based on level) (+ 15% AP). If she is attached attached to an ally or does so within 4 seconds, they are healed for the same amount.

Innate: While attached attached to an ally, Yuumi grants them 2 permanent Friendship stacks whenever they kill enemy champions or minions. The ally with the highest Friendship stacks becomes Yuumi's Best Friend, which empowers her abilities with additional effects while she is attached attached to them.