{T}: Add {C}.
{1}{S}: Until end of turn, this land becomes a 2/3 Construct artifact creature. It's still a land. ({S} can be paid with one mana from a snow source.)
Whenever this land deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.
Mana value
0
Printings
From
$0.21
EDHREC rank
#10377
Buy
Formats
Modern
Legal
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
14 Jun 2019
A creature dealt combat damage by Frostwalk Bastion won't untap during its controller's next untap step, even if it was already tapped and even if Frostwalk Bastion leaves the battlefield before then.
14 Jun 2019
If you turn Frostwalk Bastion into a creature but haven't controlled it continuously since your most recent turn began, you won't be able to activate its mana ability or attack with it.