Blood Clock
Oracle Text
At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.
Card Rulings
6/1/2005 A player who controls no permanents doesn’t need to pay 2 life (although that player can choose to do so).
6/1/2005 A player with less than 2 life can’t pay 2 life and must return a permanent.
6/1/2005 The choice of which permanent to return or whether to pay life is made as the triggered ability resolves.
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