Exernos, Birthday Boy

+2: Ask your opponent "Does it resolve?" If it does, until your next turn, spells and abilities you control cannot be countered.
0: Make a pun about target nonland permanent. If it made the opponent cringe, gain control of that permanent.
-18: Open a booster pack. You may play any number of spells from that pack, then put any lands onto the battlefield under your control.