Retether [Wilds of Eldraine Commander] Class you may copy that ability

you may copy that ability

When Stormchaser's Talent enters

where X is the result

Set: Mystery Booster 2 Type: Legendary Artifact Creature — Golem Rarity: Mythic Cost: {5} Karn

but you won't like it

Retether [Wilds of Eldraine Commander] Class you may copy that abilitySet: Wilds of Eldraine Commander Type: Sorcery Rarity: Rare Cost: {3}{W} Return each Aura card from your graveyard to play. Only creatures can be enchanted this way. (Aura cards that can't enchant a creature in play remain in your graveyard.) The rifts reach into infinite time streams, bringing the divergent products of alternate pasts into the present.