不詳の安息地

{T}：{C}を加える。
{S}{S}{S}：ターン終了時まで、不詳の安息地は警戒とすべてのクリーチャー・タイプを持つ４/３のクリーチャーになる。これは土地でもある。（{S}は氷雪である発生源からのマナ１点で支払える。）

Faceless Haven

{T}: Add {C}.
{S}{S}{S}: Faceless Haven becomes a 4/3 creature with vigilance and all creature types until end of turn. It's still a land. ({S} can be paid with one mana from a snow source.)

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Kaldheim

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Although Faceless Haven will have all creature types after its last activated ability resolves, it will not have the changeling keyword ability.

If Faceless Haven becomes a creature but hasn’t been under your control since the beginning of your most recent turn, it can’t attack or be tapped for mana.

Snow is a supertype, not a card type. It has no rules meaning or function by itself, but spells and abilities may refer to it.

Snow isn’t a type of mana. If an effect says you may spend mana as though it were any type, you can’t pay for {S} using mana that wasn’t produced by a snow source.

Some cards have additional effects for each {S} spent to cast them. You can cast these spells even if you don’t spend any snow mana to cast them; their additional effects simply won’t do anything.

The Kaldheim set doesn’t have any cards with mana costs that include {S}, but some previous sets do. If an effect says such a spell costs {1} less to cast, that reduction doesn’t apply to any {S} costs. This is also true for activated abilities that include {S} in their activation costs and effects that reduce those costs.

The {S} symbol is a generic mana symbol. It represents a cost that can be paid by one mana that was produced by a snow source. That mana can be any color or colorless.