Frostwalk Bastion [Modern Horizons] Urza's Legacy At the beginning of your

At the beginning of your upkeep

Set: Fourth Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {R} Enchant creature

The same is true for artifacts and enchantments

"There will come a time when the only prey left will be each other

Frostwalk Bastion [Modern Horizons] Urza's Legacy At the beginning of yourSet: Modern Horizons Type: Snow Land Rarity: Uncommon {T}: Add {C}. {1}{S}: Until end of turn, Frostwalk Bastion becomes a 2 3 Construct artifact creature. It's still a land. ({S} can be paid with one mana from a snow source.) Whenever Frostwalk Bastion deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.