Millstone
Artifact
, 
: Target player mills two cards.
More than one mage has been driven insane by the sound of the millstone relentlessly grinding away.
John Avon
Tenth Edition (10E)
• #334Rulings
Since you are putting more than one card in the graveyard at one time, the affected player can choose the order the 2 cards go in.
(wotc • 2004-10-04)
Can be used on a player with less than 2 cards in their library. It will remove 0 or 1 cards if that is all that is available.
(wotc • 2004-10-04)
It is not a draw effect so it will not cause a player with less than 2 cards in their library to lose.
(wotc • 2004-10-04)
Printings
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Rulings
Since you are putting more than one card in the graveyard at one time, the affected player can choose the order the 2 cards go in.
(wotc • 2004-10-04)
Can be used on a player with less than 2 cards in their library. It will remove 0 or 1 cards if that is all that is available.
(wotc • 2004-10-04)
It is not a draw effect so it will not cause a player with less than 2 cards in their library to lose.
(wotc • 2004-10-04)