Heartless Summoning

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

Mountain

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.

Cathartic Reunion

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

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.)

Priest of Urabrask

When this creature enters, add {R}{R}{R}.

Garna, the Bloodflame

Flash
When Garna 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.

Basal Sliver

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

Dragonskull Summit

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

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.

Forever Young

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

Priest of Gix

When this creature enters, add {B}{B}{B}.

Catalyst Elemental

Viashino Pyromancer

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