Caustic Bronco

Whenever Caustic Bronco attacks, reveal the top card of your library and put it into your hand. You lose life equal to that card's mana value if Caustic Bronco isn't saddled. Otherwise, each opponent loses that much life.
Saddle 3 (Tap any number of other creatures you control with total power 3 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

每当蚀液野马攻击时，展示你的牌库顶牌并置于你手上。如果蚀液野马未乘驾，你失去等同于该牌法术力值的生命。若否，则每位对手各失去该数量的生命。
乘驾3