Sern, Spiritcombine

+2: If a source would deal damage to you or a non-Sern permanent you control, prevent 3 of that damage. You and non-Sern permanents gain hexproof.
-3: Create a copy of target creature or Planeswalker in a graveyard except it has "When this permanent leaves play, it deals 3 damage to any target."
-11: Exile each nonland permanent you don't control.