Karn Uncompromising

: If an effect would create one or more tokens under your control, Karn Uncompromising creates twice that many of those tokens instead.
+2: Create two 0/1 Eldrazi Spawn tokens with "Sacrifice this creature: Add 1 colorless mana".
-12: Sacrifice target token creature(s), for each token creature sacrificed this way deal 1 damage to target player, creature, or planeswalker.