Whetstone
Urza's Saga — rare
Artifact
Whetstone rulings:
2004-10-04: Can be used if a player has less than 2 cards in their library. It will remove 0 or 1 cards if that is all that is available.
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.
2004-10-04: Since you are putting more than one card in the graveyard at one time, each affected player can choose the order the 2 cards go in.