First printed in Worldwake (2010)
Instant — Trap
If an opponent had a green creature enter the battlefield under their control this turn, you may pay 
rather than pay this spell's mana cost.
Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.
- Illustrated by
- Howard Lyon
Permafrost Trap legality
- Legal in
- Modern, Legacy, Vintage, Commander, Duel Commander, PreDH, Oathbreaker
- Not legal in
- Standard, Pioneer, Pauper, Future Standard, Historic, Timeless, Alchemy, Penny Dreadful, Premodern, Old School 93/94, Gladiator, Pauper Commander, Tiny Leaders, Brawl, Standard Brawl, Competitive Brawl
Rulings (3)
- If a targeted creature is untapped at the time its controller's next untap step begins, the second part of the ability has no effect on it.
- If an affected creature changes controllers before its previous controller's next untap step, this ability will prevent it from untapping during its new controller's next untap step.
- You may target any two (or fewer) creatures. It's okay if any of them are already tapped. If you cast Permafrost Trap for , you don't have to target the green creature that entered under an opponent's control.
Prices
Paper price: €0.11 / $0.15 , the cheapest non-foil print (Cardmarket, and TCGplayer, otherwise Mana Pool or Card Kingdom, through MTGJSON, 10 Nov 2026).
MTGO price: 0.003 TIX, the cheapest non-foil print (average sell price on GoatBots, 10 Nov 2026).