Unown Z

Shaped like ancient writing, it is a huge mystery whether language or UNOWN came first.

Poke-POWER — ZERO: Once during your turn (before your attack), if Unown Z is on your Bench and you have no cards in your deck, you may discard all cards attached to Unown Z and put Unown Z on top of your deck.

Hidden Power: Remove as many damage counters as you like from each Unown you have in play. Put that many damage counters on the Defending Pokémon.