Claim the Firstborn [Throne of Eldraine] Normal Trap while they control a face-up

while they control a face-up monster (Quick Effect): You can detach 2 materials from this card

Then exile it

return Glistening Oil to its owner's hand

Set: Kaladesh Inventions Type: Artifact Creature — Construct Rarity: Mythic Cost: {X}{X} Hangarback Walker enters the battlefield with X +1/+1 counters on it

Negated cards/effects that Summon do not count

Claim the Firstborn [Throne of Eldraine] Normal Trap while they control a face-upSet: Throne of Eldraine Type: Sorcery Rarity: Uncommon Cost: {R} Gain control of target creature with mana value 3 or less until end of turn. Untap that creature. It gains haste until end of turn. "The deal was struck and the favor had been done. And so, under the cover of night, the debt was paid." *Tales of the Fae*