Oracle Text

Ninjutsu B (B, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Skullsnatcher deals combat damage to a player, exile up to two target cards from that player's graveyard.

Card Rulings

2/1/2005 Skullsnatcher’s ability can target zero, one, or two cards in that player’s graveyard.