The Crimson Raiders

+2: Create an X/X Vault-Hunter creature token where X is the number of creatures you control, then draw 2 cards.
-2: Return up to 2 target Siren and/or Vault-Hunter permanents from your graveyard to the battlefield.
-12: You get an emblem with, "whenever a creature an opponent controls would enter the battlefield, exile it and create an eridium token."