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