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Bloodsoaked Altar
{4}{B}{B}
Artifact
{T}, Pay 2 life, Discard a card, Sacrifice a creature: Create a 5/5 black Demon creature token with flying. Activate only as a sorcery.

Demonic Rising
{3}{B}{B}
Enchantment
At the beginning of your end step, if you control exactly one creature, create a 5/5 black Demon creature token with flying.

Ob Nixilis of the Black Oath
{3}{B}{B}
Legendary Planeswalker -- Nixilis
3
[+2]: Each opponent loses 1 life. You gain life equal to the life lost this way.
[-2]: Create a 5/5 black Demon creature token with flying. You lose 2 life.
[-8]: You get an emblem with "{1}{B}, Sacrifice a creature: You gain X life and draw X cards, where X is the sacrificed creature's power."
~this~ can be your commander.

Priest of the Blood Rite
{3}{B}{B}
Creature -- Human Cleric
2/2
When ~this~ enters, create a 5/5 black Demon creature token with flying.
At the beginning of your upkeep, you lose 2 life.

Skirsdag High Priest
{1}{B}
Creature -- Human Cleric
1/2
Morbid -- {T}, Tap two untapped creatures you control: Create a 5/5 black Demon creature token with flying. Activate only if a creature died this turn.