This build is particularly powerful as it abuses Abysal Mask and knights vow to an untargettable champion. The nerfs to ability power scalings make this a more viable build for a higher winrate Yuumi player's enjoyment and grind. Abyssal Mask Yuumi has emerged as a surprisingly powerful and effective build in patch 25.19 due to its unique synergy with her playstyle and teamfight role. Abyssal Mask amplifies Yuumi’s impact by increasing her and her attached ally’s magic damage dealt to nearby enemies, which enhances her poke and healing effectiveness in clustered fights. The item’s bonus health and mana also bolster Yuumi’s survivability and sustain, helping her stay attached longer and cast more spells without running out of resources. Additionally, Abyssal Mask provides magic resistance and a useful passive that reduces enemy magic resist, making it easier for Yuumi and her teammates to shred through enemy frontline tanks and bruisers—a crucial factor in many team compositions today.

Pairing Abyssal Mask with Knight’s Vow and Staff of Flowing Water further amplifies Yuumi’s utility and protective capabilities. Knight’s Vow offers additional durability by redirecting damage from her bonded ally and healing when near them, perfectly complementing Yuumi’s attachment mechanic and allowing her to keep her ADC alive longer in fights. Meanwhile, Staff of Flowing Water enhances both Yuumi and her ally’s ability power and movement speed after she heals or shields, boosting the overall damage output and mobility of her team. Together, these items create a strong frontline-enabler build that balances survivability, utility, and offensive support—making Yuumi a formidable enchanter who can both protect and empower her teammates in the current meta. Be sure to peep out the stream to watch me use this build :3