安息の無い墓、スヴォグトース

{T}：あなたのマナ・プールに{1}を加える。
{3}{B}{G}：ターン終了時まで、安息の無い墓、スヴォグトースは「このクリーチャーのパワーとタフネスは、それぞれあなたの墓地にあるクリーチャー・カードの総数に等しい」の能力を持つ黒であり緑である植物・ゾンビ・クリーチャーになる。これは土地でもある。

Svogthos, the Restless Tomb

{T}: Add {C}.
{3}{B}{G}: Until end of turn, Svogthos, the Restless Tomb becomes a black and green Plant Zombie creature with "This creature's power and toughness are each equal to the number of creature cards in your graveyard." It's still a land.

Commander Anthology Volume II

Duel Decks: Izzet vs. Golgari

{T}: Add {1} to your mana pool.
{3}{B}{G}: Until end of turn, Svogthos, the Restless Tomb becomes a black and green Plant Zombie creature with "This creature's power and toughness are each equal to the number of creature cards in your graveyard." It's still a land.

Commander 2011

Ravnica: City of Guilds

While animated, Svogthos’s power and toughness changes each time a creature card enters or leaves its controller’s graveyard.

A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn’t matter how long the permanent has been a creature.

Activating the ability that turns it into a creature while it’s already a creature will override any effects that set its power and/or toughness to a specific number. However, any effect that raises or lowers power and/or toughness (such as the effect created by Giant Growth, Glorious Anthem, or a +1/+1 counter) will continue to apply.