Briber's Purse

Oracle Text

Briber's Purse enters the battlefield with X gem counters on it.

1, T, Remove a gem counter from Briber's Purse: Target creature can't attack or block this turn.

Card Rulings

9/20/2014 Activating the ability targeting a creature that’s already attacking or blocking won’t remove it from combat or affect that attack or block.
9/20/2014 If Briber’s Purse has no gem counters on it, it remains on the battlefield, although you can’t activate its last ability.