Burn Bright

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

Mountain

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 Arsonist

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

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.

Battle-Rattle Shaman

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

Ornery Goblin

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

Goblin Commando

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

Outnumber

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

Beetleback Chief

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

Makeshift Munitions

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

Goblin Instigator

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

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.