Kuki Shinobu heals while applying Electro off-field, making her valuable in Electro-reaction teams like Aggravate or Hyperbloom. Pair her with an Electro or Dendro carry and use Elemental Mastery and HP% scaling to maximize both healing and reaction damage. Equip a sword with EM or HP% substats, and prioritize EM in artifacts to strengthen her supportive output.