Dumah, Angel of Dreams

+2: Every player taps one permanent they control. That permanent doesn't untap on their next untap step.
-2: Tap X number of permanent you control; they don't untap during your next untap step. Mill X cards into graveyard, gain X loyalty counters.
-5: You may choose a permanent card you own from outside the game, reveal that card, and put it into your hand.