When the triggered ability resolves, first you choose which creature you'll sacrifice (if you control any non-Vampire creatures), then each other player in turn order does the same, then all chosen creatures are sacrificed at the same time.
01-03-2010
wotc
If a player controls no creatures, or if all creatures a player controls are Vampires, that player simply doesn't sacrifice anything.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
Dan Murayama Scott2010-02-05
