MTG

As an additional cost to cast this spell, sacrifice a creature or planeswalker. Heartfire deals 4 damage to any target.

When Goblin Commando enters the battlefield, it deals 2 damage to target creature.

Goblin Goon can't attack unless you control more creatures than defending player. Goblin Goon can't block unless you control more creatures than at...

Create four 1/1 red Goblin creature tokens.

When Goblin Shortcutter enters the battlefield, target creature can't block this turn.

Whenever another creature enters the battlefield, you may put X +1/+1 counters on Hamletback Goliath, where X is that creature's power.

Flying (This creature can't be blocked except by creatures with flying or reach.) {R}: Furnace Whelp gets +1/+0 until end of turn.

Create two 1/1 red Devil creature tokens. They have "When this creature dies, it deals 1 damage to any target."

Flying {R}: Dragon Hatchling gets +1/+0 until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)

{X}{R}, {T}, Sacrifice Cinder Elemental: It deals X damage to any target.

As an additional cost to cast this spell, sacrifice a creature. Collateral Damage deals 3 damage to any target.

Whenever Ashmouth Hound blocks or becomes blocked by a creature, Ashmouth Hound deals 1 damage to that creature.

Blindblast deals 1 damage to target creature. That creature can't block this turn. Draw a card.

Bloodrock Cyclops attacks each combat if able.

When Tempting Witch enters the battlefield, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") {2},...

When Wailing Ghoul enters the battlefield, mill two cards.

{2}{B}: Return Sanitarium Skeleton from your graveyard to your hand.

Flying (This creature can't be blocked except by creatures with flying or reach.) Whenever a creature dealt damage by Sengir Vampire this turn dies...

Exile target creature. Put two loyalty counters on a planeswalker you control.

When Shambling Goblin dies, target creature an opponent controls gets -1/-1 until end of turn.

{1}, Sacrifice a creature: Put a +1/+1 counter on Phyrexian Broodlings.

Flying {T}, Sacrifice Phyrexian Debaser: Target creature gets -2/-2 until end of turn.

When Phyrexian Gargantua enters the battlefield, you draw two cards and you lose 2 life.