Basal Sliver

All Slivers have "Sacrifice this permanent: Add {B}{B}."

Faithless Looting

Draw two cards, then discard two cards.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Garna, the Bloodflame

Flash
When Garna, the Bloodflame enters, return to your hand all creature cards in your graveyard that were put there from anywhere this turn.
Other creatures you control have haste.

Dragonskull Summit

Dragonskull Summit enters tapped unless you control a Swamp or a Mountain.
{T}: Add {B} or {R}.

Viashino Pyromancer

When this creature enters, it deals 2 damage to target player or planeswalker.

Swamp

Heartless Summoning

Creature spells you cast cost {2} less to cast.
Creatures you control get -1/-1.

Grim Haruspex

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Whenever another nontoken creature you control dies, draw a card.

Simian Spirit Guide

Exile Simian Spirit Guide from your hand: Add {R}.

Forever Young

Put any number of target creature cards from your graveyard on top of your library.
Draw a card.

Mountain

Priest of Gix

When Priest of Gix enters, add {B}{B}{B}.

Hazoret's Monument

Red creature spells you cast cost {1} less to cast.
Whenever you cast a creature spell, you may discard a card. If you do, draw a card.

Catalyst Elemental

Sacrifice Catalyst Elemental: Add {R}{R}.

Priest of Urabrask

When Priest of Urabrask enters, add {R}{R}{R}.

Cathartic Reunion

As an additional cost to cast this spell, discard two cards.
Draw three cards.