Rakdos Aristocrats

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

When Cauldron Familiar enters the battlefield, each opponent loses 1 life and you gain 1 life.

Sacrifice a Food: Return Cauldron Familiar from your graveyard to the battlefield.

[0]: Put a loyalty counter on each red planeswalker you control.

[0]: Create two 1/1 red Elemental creature tokens. They gain haste. Sacrifice them at the beginning of the next end step.

[−2]: You may cast target instant or sorcery card with converted mana cost 3 or less from your graveyard. If that spell would be put into your graveyard this turn, exile it instead.

Gain control of target creature with converted mana cost 3 or less until end of turn. Untap that creature. It gains haste until end of turn.

Menace

When God-Eternal Bontu enters the battlefield, sacrifice any number of other permanents, then draw that many cards.

When God-Eternal Bontu dies or is put into exile from the battlefield, you may put it into its owner's library third from the top.

Gutterbones enters the battlefield tapped.

{1}{B}: Return Gutterbones from your graveyard to your hand. Activate this ability only during your turn and only if an opponent lost life this turn.

Whenever a player sacrifices a permanent, Mayhem Devil deals 1 damage to any target.

Whenever a nontoken creature you control dies, Midnight Reaper deals 1 damage to you and you draw a card.

Lifelink

When Murderous Rider dies, put it on the bottom of its owner's library.

{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature. You add {B}{B} and draw a card.

Your opponents can't gain life.

[−2]: Create a 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target."

{T}, Sacrifice a creature: Create a Food token. If the sacrificed creature's toughness was 4 or greater, create two Food tokens instead. (They're artifacts with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")