Enigma, That Which Is

+3: Target planeswalker gains an ability of your choice that any other standard planeswalker has
0: Enigma becomes of copy of target planeswalker in play until end of turn. You may use one loyalty ability of that card. Loyalty stays
-20: Seperate all permanents in play into ten piles at random. Exile all. Gain life and deal damage to any target equal to the total mana cost of one