As an additional cost to cast this spell, sacrifice a creature. Draw two cards.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

At the beginning of your upkeep, you draw a card and you lose 1 life.

Add {B}{B}{B}.

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to its mana value.

{B}, Sacrifice a creature: Destroy target nonblack creature.

You may pay {B} rather than pay this spell's mana cost if there are thirteen or more creatures on the battlefield. Each player sacrifices thirteen creatures of their choice.

Consuming Corruption deals X damage to target creature or planeswalker and you gain X life, where X is the number of Swamps you control.

Target creature gets -1/-1 until end of turn for each Swamp you control.

Whenever a creature you control dies, each other player sacrifices a creature of their choice.