寄生索尔兽

Text:

敲诈（每当你施放一个咒语时，你可以支付。若你如此作，则每位对手各失去1点生命，且你获得等量的生命。）
，支付2点生命：从目标非地永久物上移去一个指示物。

Rulings:

• 1/24/2013 The nonland permanent you choose as the target doesn’t have to have any counters on it. If it has more than one kind of counter, you’ll choose one of those counters when the ability resolves.
• 1/24/2013 You can’t activate Thrull Parasite’s last ability to stop a player from paying the cost of a spell or an ability that requires removing a counter from a permanent (such as a planeswalker’s loyalty ability).
• 4/15/2013 You may pay <img src="/Handlers/Image.ashx?size=small&amp;name=WB&amp;type=symbol" alt="White or Black" align="absbottom" /> a maximum of one time for each extort triggered ability. You decide whether to pay when the ability resolves.
• 4/15/2013 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.
• 4/15/2013 The extort ability doesn’t target any player.