Shadowlord Gargos

Flying, vigilance, trample
Gargos may block creatures with menace alone.
Whenever you cast Gargos, search your library
for up to three battle cards, exile them, then
shuffle. You may cast those spells this turn
without paying their mana costs.
Whenever a battle is defeated, if the defending
player has failed to defend three or more battles
this game, that player loses the game.