Quintessential Katana (TMT-023) - Teenage Mutant Ninja Turtles

Equipped creature gets +1/+1 and has "Whenever this creature deals combat damage, untap it and you gain 2 life."

Whenever a Ninja you control enters, you may attach this Equipment to it.

Equip 2 (2: Attach to target creature you control. Equip only as a sorcery.)