Oracle Text

2BB: Exile Carrionette and target creature unless that creature's controller pays 2. Activate this ability only if Carrionette is in your graveyard.

Card Rulings

10/4/2004 Since it is exiled as part of the effect and not part of the cost, you can activate its ability more than once.
10/4/2004 A creature with Protection from Creatures can’t be targeted by this card’s ability.