Blood Pet

Accursed Centaur

When this creature enters, sacrifice a creature.

Kjeldoran Dead

When this creature enters, sacrifice a creature.
{B}: Regenerate this creature.

Mogg Fanatic

Sacrifice this creature: It deals 1 damage to any target.

Selfless Savior

Sacrifice this creature: Another target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Fanatical Firebrand

Haste (This creature can attack and {T} as soon as it comes under your control.)
{T}, Sacrifice this creature: It deals 1 damage to any target.

Straw Golem

When an opponent casts a creature spell, sacrifice this creature.

Skirk Prospector

Fume Spitter

Sacrifice this creature: Put a -1/-1 counter on target creature.

Scorn-Blade Berserker

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)
{1}, Sacrifice this creature: Draw a card.