Bloodthrone Vampire

Sacrifice a creature: Bloodthrone Vampire gets +2/+2 until end of turn.

Bloodcrazed Neonate

Bloodcrazed Neonate attacks each combat if able.
Whenever Bloodcrazed Neonate deals combat damage to a player, put a +1/+1 counter on it.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Whenever a creature an opponent controls enters, you may have that player lose 1 life.

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

Night Revelers has haste as long as an opponent controls a Human.

Lightning Bolt deals 3 damage to any target.

Rakdos Carnarium enters tapped.
When Rakdos Carnarium enters, return a land you control to its owner's hand.
{T}: Add {B}{R}.

Cinder Barrens enters tapped.
{T}: Add {B} or {R}.

Whenever Stromkirk Patrol deals combat damage to a player, put a +1/+1 counter on it.

When Crossway Vampire enters, target creature can't block this turn.

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Vampire creatures you control get +2/+0 and gain first strike until end of turn. (They deal combat damage before creatures without first strike.)