Vortex of Hate

At the beginning of each player's upkeep, they sacrifice a permanent, then if they didn't
sacrifice a [creature] this way, they lose 2 life.
{1}{g}: Choose artifact, creature, enchantment,
land, or planeswalker. Replace the word in
brackets with the chosen word. Activate only
as a sorcery.
It is the shadow of a dead god.