Keening Stone
Artifact
, 
: Target player mills X cards, where X is the number of cards in that player's graveyard.
"The new prototype utilizing a rotational axis is marvelously effective: it makes me want to tear my own ears off." —Ashnod, to her assistants
Warren Mahy
Rulings
The value of X is determined as the ability starts to resolve. If the targeted player has five cards in their graveyard at that time, for example, this ability will put five more cards into that graveyard from the top of that player's library.
(wotc • 2010-06-15)
Rulings
The value of X is determined as the ability starts to resolve. If the targeted player has five cards in their graveyard at that time, for example, this ability will put five more cards into that graveyard from the top of that player's library.
(wotc • 2010-06-15)