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

return it to its owner's hand

Put that card into your hand and the rest on the bottom of your library in a random order

{T}: End the turn

and enchantment with mana value less than or equal to the amount of {E} paid this way

gain control of target permanent

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.