Guttersnipe

Whenever you cast an instant or sorcery spell, this creature deals 2 damage to each opponent.

Krenko, Tin Street Kingpin

Whenever Krenko, Tin Street Kingpin attacks, put a +1/+1 counter on it, then create a number of 1/1 red Goblin creature tokens equal to Krenko's power.

Crash Through

Creatures you control gain trample until end of turn. (Each of those creature can deal excess combat damage to the player or planeswalker it's attacking.)
Draw a card.

Demolish

Goblin Motivator

{T}: Target creature gains haste until end of turn. (It can attack and {T} this turn.)

Squee, the Immortal

You may cast Squee, the Immortal from your graveyard or from exile.

Rummaging Goblin

Mountain

Staff of Nin

At the beginning of your upkeep, draw a card.
{T}: Staff of Nin deals 1 damage to any target.

Skirk Prospector

Volley Veteran

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

Boggart Brute

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

Siege-Gang Commander

When Siege-Gang Commander enters, create three 1/1 red Goblin creature tokens.
{1}{R}, Sacrifice a Goblin: Siege-Gang Commander deals 2 damage to any target.

Nahiri's Stoneblades

Up to two target creatures each get +2/+0 until end of turn.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Mogg Flunkies

Mogg Flunkies can't attack or block alone.

Shock

Blow Your House Down

Up to three target creatures can't block this turn. Destroy any of them that are Walls.

Goblin Trashmaster

Other Goblins you control get +1/+1.
Sacrifice a Goblin: Destroy target artifact.

Brash Taunter

Indestructible
Whenever Brash Taunter is dealt damage, it deals that much damage to target opponent.
{2}{R}, {T}: Brash Taunter fights another target creature.

Goblin Instigator

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

Reckless Air Strike

Choose one —
• Reckless Air Strike deals 3 damage to target creature with flying.
• Destroy target artifact.

Guild Globe

When Guild Globe enters, draw a card.
{2}, {T}, Sacrifice Guild Globe: Add two mana of different colors.

Trumpet Blast

Attacking creatures get +2/+0 until end of turn.

Frenzied Goblin

Whenever this creature attacks, you may pay {R}. If you do, target creature can't block this turn.

Enchanter's Bane

At the beginning of your end step, target enchantment deals damage equal to its mana value to its controller unless that player sacrifices it.