Thels, Shadow of Death

0: Sacrifice a non-token creature, then put a number of loyalty counter on Thels, Shadow of Death equal to that creature's power.
-3: Each opponent sacrifices a creature. You gain life equal to the greatest toughness among creatures that were sacrificed this way.
-13: Create a token copy of each creature in your graveyard. Those tokens have Haste, Flying, and Double Strike.