Nyx, Martyr of Tragedy

0: Remove a counter from any number of other permanents you control. Put a loyalty counter on Nyx for each counter removed this way.
-2: Exile four cards from your graveyard and discard a card. Nyx, Nihil of Tragedy deals 2 damage to all token creatures and each opponent.
-8: Destroy all noncreature, nonland permanents. Return any number of cards you own from exile to the battlefield tapped.