Unown's "CURE" Poke-POWER should read, "Once during your turn, when you put Unown from your hand onto your Bench, you may remove all Special Conditions from your Active Pokémon." Use of this Poke-POWER is optional.
Source:
TPCi Announcement (2011-04-11), PUI Rules Team (2011-05-05)
Relevant cards
Note: All applicable cards may not be listed below.