Card Codex

Furnace Reins

Scryfall

2R · Sorcery

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat damage to a player or battle, create a Treasure token." (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Similar cards

Name	Mana	Type	Text
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Hackrobat	1BR	Creature — Human Rogue	Spectacle {B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) {B}: Hackrobat gains deathtouch until end of turn. {R}: Hackrobat gets +2/-2 until end of turn. 2/3
Rootborn Defenses	2W	Instant	Populate. Creatures you control gain indestructible until end of turn. (To populate, create a token that's a copy of a creature token you control.)
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Echo Chamber	4	Artifact	{4}, {T}: An opponent chooses target creature they control. Create a token that's a copy of that creature. That token gains haste until end of turn. Exile the token at the beginning of the next end step. Activate only as a sorcery.