Sans the Skeleton

: Sans the Skeleton enters the battlefield with +X Loyalty Counters. Whenever a Skeleton enters the battlefield proliferate.
+2: Create 2 1/1 Gaster Blaster Creature Tokens with haste. Sacrifice them at the end of your turn.
-14: Destroy all non-land permanents an opponent controls, then create a 1/1 Gaster Blaster Token for each permanent destroyed this way.