Battle-Rattle Shaman

At the beginning of combat on your turn, you may have target creature get +2/+0 until end of turn.

Outnumber

Outnumber deals damage to target creature equal to the number of creatures you control.

Krenko, Mob Boss

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.

Goblin Arsonist

When Goblin Arsonist dies, you may have it deal 1 damage to any target.

Burn Bright

Creatures you control get +2/+0 until end of turn.

Goblin Commando

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

Beetleback Chief

When Beetleback Chief enters, create two 1/1 red Goblin creature tokens.

Goblin Rally

Create four 1/1 red Goblin creature tokens.

Mountain

Shock

Goblin Lore

Draw four cards, then discard three cards at random.

Volley Veteran

When this creature enters, it deals damage to target creature an opponent controls equal to the number of Goblins you control.

Ornery Goblin

Whenever Ornery Goblin blocks or becomes blocked by a creature, Ornery Goblin deals 1 damage to that creature.

Thriving Bluff

Thriving Bluff enters tapped. As it enters, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

Makeshift Munitions

{1}, Sacrifice an artifact or creature: Makeshift Munitions deals 1 damage to any target.

Goblin Chieftain

Haste (This creature can attack and {T} as soon as it comes under your control.)
Other Goblin creatures you control get +1/+1 and have haste.

Muxus, Goblin Grandee

When Muxus, Goblin Grandee enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.
Whenever Muxus attacks, it gets +1/+1 until end of turn for each other Goblin you control.

Goblin Shortcutter

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

Boggart Brute

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

Goblin Instigator

When Goblin Instigator enters, create a 1/1 red Goblin creature token.

Goblin Goon

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