Instant — Trap
Permafrost Trap
If an opponent had a green creature enter the battlefield under their control this turn, you may pay {U} 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.
From Magic: The Gathering.
Exact printings
- Worldwake - #34 · uncommon · FOIL · EN
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