Darkness

Prevent all combat damage that would be dealt this turn.

Blood Pet

Rowan, Scion of War

Menace
{T}: Spells you cast this turn that are black and/or red cost {X} less to cast, where X is the amount of life you lost this turn. Activate only as a sorcery.

Bitter Reunion

When this enchantment enters, you may discard a card. If you do, draw two cards.
{1}, Sacrifice this enchantment: Creatures you control gain haste until end of turn.

Exsanguinate

Each opponent loses X life. You gain life equal to the life lost this way.

Mischievous Poltergeist

Flying
Pay 1 life: Regenerate this creature.