Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.

Thrull Champion

Thrull creatures get +1/+1.
{T}: Gain control of target Thrull for as long as you control this creature.

Thrull Retainer

Enchant creature
Enchanted creature gets +1/+1.
Sacrifice this Aura: Regenerate enchanted creature.

Artifact Blast

Balduvian Horde

When this creature enters, sacrifice it unless you discard a card at random.

Ball Lightning

Stormforged Armor

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Bestial Fury

Enchant creature
When this Aura enters, draw a card at the beginning of the next turn's upkeep.
Whenever enchanted creature becomes blocked, it gets +4/+0 and gains trample until end of turn.

Brothers of Fire

{1}{R}{R}: This creature deals 1 damage to any target and 1 damage to you.

Divine Transformation

Enchant creature
Enchanted creature gets +3/+3.

Crookshank Kobolds

Dwarven Catapult

Dwarven Catapult deals X damage divided evenly, rounded down, among all creatures target opponent controls.

Dwarven Soldier

Whenever this creature blocks or becomes blocked by one or more Orcs, this creature gets +0/+2 until end of turn.

Fissure

Destroy target creature or land. It can't be regenerated.

Goblin Chirurgeon

Sacrifice a Goblin: Regenerate target creature.

Goblin Grenade

As an additional cost to cast this spell, sacrifice a Goblin.
Goblin Grenade deals 5 damage to any target.

Goblin Mutant

Trample
This creature can't attack if defending player controls an untapped creature with power 3 or greater.
This creature can't block creatures with power 3 or greater.

Masters Edition