Ob Nixilis, the Adversary (Etched) Commander 2020 return it to its owner's

return it to its owner's hand

If you would create one or more Treasure tokens

gain control of target permanent

Other Treefolk creatures you control get +1/+1

First strike Whenever Mirri attacks

Ob Nixilis, the Adversary (Etched) Commander 2020 return it to its owner'sCasualty X. The copy isn't legendary and has starting loyalty X. (As you cast this spell, you may sacrifice a creature with power X. When you do, copy this spell. The copy becomes a token.) +1: Each opponent loses 2 life unless they discard a card. If you control a Demon or Devil, you gain 2 life. 2: Create a 1 1 red Devil creature token with 'When this token dies, it deals 1 damage to any target.' 7: Target player draws seven cards and loses 7 life.