Immortal Servitude
{X}{W/B}{W/B}{W/B}
Sorcery
Oracle Text
Return each creature card with mana value X from your graveyard to the battlefield.
Watch Out
Static ability — always active, can't be responded toRules Note
This card has a static ability that applies continuously as long as it's on the battlefield. There's no trigger or activation — the effect just exists. Removing the permanent is the only way to stop it.