Morwyn

Vigilance, First Strike Whenever you attack, attacking creatures you control gain indestructible until end of turn. At the beginning of your end step, if three or more creatures you control were dealt damage this turn and are still on the battlefield, you may sacrifice Morwyn. If you do, you get an emblem with: “Creatures you control have vigilance. If a source would deal damage to you or a creature you control, prevent 1 of that damage.”