Curio Snatcher

Ward —Sacrifice an artifact or enchantment.
If one or more +1/+1 counters would be put on
Curio Snatcher, that many plus one +1/+1
counters are put on it instead.
Remove a +1/+1 counter from Curio Snatcher:
Put a wither counter on target artifact or
enchantment. Activate only during your turn.