Have

Goblin Instigator

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

Muxus, Goblin Grandee

When Muxus 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 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.

Goblins

Barrage of Expendables

{R}, Sacrifice a creature: This enchantment deals 1 damage to any target.

Goblin Rally

Create four 1/1 red Goblin creature tokens.

Beetleback Chief

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

Goblin Oriflamme

Attacking creatures you control get +1/+0.

Shock

Makeshift Munitions

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

Boggart Brute

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

Outnumber

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

Goblin Lore

Draw four cards, then discard three cards at random.

Goblin Shortcutter

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

Mountain

Goblin Commando

When this creature enters, it deals 2 damage to target creature.

Goblin Arsonist

When this creature dies, you may have it deal 1 damage to any target.

Thriving Bluff

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

Goblin Goon

This creature can't attack unless you control more creatures than defending player.
This creature can't block unless you control more creatures than attacking player.

Burn Bright

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

Battle-Rattle Shaman

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

Volley Veteran

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

Krenko, Mob Boss

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

Ornery Goblin

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