At the beginning of combat on your turn, target creature you control gets +2/+0 until end of turn.

At the end of combat on your turn, if a player was dealt 6 or more combat damage this turn, transform this enchantment, then attach it to a creature you control. “Sorry for making you wait, Yuna. I had some promises to keep, ya?”

World Champion, Celestial WeaponDouble Overdrive Equipped creature gets +2/+0 and has double strike.Equip 3 (3: Attach to target creature you control. Equip only as a sorcery)