无尽力量祭祠

Text:

在你的维持开始或每当你施放黑色咒语时，在无尽力量祭祠上放置一个充电指示物。
，，牺牲无尽力量祭祠：无尽力量祭祠上每有一个充电指示物，目标牌手便弃一张牌。

Rulings:

• 6/1/2011 Unlike most abilities that force a player to discard cards, this ability may be activated whenever you could cast an instant, including during your opponent’s draw step after they have drawn a card.
• 6/1/2011 You can’t force an opponent to discard a card they cast by activating the last ability in response. The spell is on the stack by then.