Monkey D. Luffy, Joyboy

Trample, Armament 4, Annihilator 2, Observation+, Conqueror 3, Indestructible
Can only be cast if you have a Monkey D. Luffy
in your graveyard. If it was not cast, Sacrifice it.
Whenever Monkey D Luffy, Joyboy attacks the
player with the most life for the first time this
turn untap all permanents you control, after this
phase there is an additional combat phase.