Tithe Drinker
Creature — Vampire
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Extort (Whenever you cast a spell, you may pay 
. If you do, each opponent loses 1 life and you gain that much life.)
2/1
イラスト：
Commander 2017#200コモン英語適正
裁定
2013年4月15日
You may pay a maximum of one time for each extort triggered ability. You decide whether to pay when the ability resolves.
2013年4月15日
The amount of life you gain from extort is based on the total amount of life lost, not necessarily the number of opponents you have. For example, if your opponent’s life total can’t change (perhaps because that player controls Platinum Emperion), you won’t gain any life.
2013年4月15日
The extort ability doesn’t target any player.