Flash

Enchant creature, enchantment or vehicle

When Revenant’s Grasp enters, tap enchanted permanent, then put three stun counters on it.

{1}{U}, Sacrifice Revenant’s Grasp: Quicken 3. Activate only as a sorcery. (Choose up to three target cards with counters on them, then add or remove up to one counter of a kind already there from among those permanents.)