Centaur's Herald
Return to Ravnica — common
Creature — Elf Scout
Centaur's Herald rulings:
2012-10-01: Once you activate the ability of Centaur’s Herald, it’s too late for a player to respond by trying to destroy it or otherwise stop you from sacrificing it.
2012-10-01: You can only sacrifice Centaur’s Herald once, so it’s not possible to activate its ability more than once.