Raging Goblin

Haste (This creature can attack and {T} as soon as it comes under your control.)

Skirk Drill Sergeant

Whenever this creature or another Goblin dies, you may pay {2}{R}. If you do, reveal the top card of your library. If it's a Goblin permanent card, put it onto the battlefield. Otherwise, put it into your graveyard.

Ib Halfheart, Goblin Tactician

Whenever another Goblin you control becomes blocked, sacrifice it. If you do, it deals 4 damage to each creature blocking it.
Sacrifice two Mountains: Create two 1/1 red Goblin creature tokens.

Goblin Warchief

Goblin spells you cast cost {1} less to cast.
Goblins you control have haste.

Mogg Fanatic

Sacrifice this creature: It deals 1 damage to any target.

Mudbutton Torchrunner

When this creature dies, it deals 3 damage to any target.

Goblin Ringleader

Haste (This creature can attack and {T} as soon as it comes under your control.)
When this creature enters, reveal the top four cards of your library. Put all Goblin cards revealed this way into your hand and the rest on the bottom of your library in any order.

Mogg War Marshal

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters or dies, create a 1/1 red Goblin creature token.

Tar Pitcher

{T}, Sacrifice a Goblin: This creature deals 2 damage to any target.

Flamewave Invoker

{7}{R}: This creature deals 5 damage to target player or planeswalker.

Reckless One

Haste
Reckless One's power and toughness are each equal to the number of Goblins on the battlefield.

Goblin Burrows

{T}: Add {C}.
{1}{R}, {T}: Target Goblin creature gets +2/+0 until end of turn.

Siege-Gang Commander

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

Goblin Matron

When this creature enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.

Goblin Sledder

Sacrifice a Goblin: Target creature gets +1/+1 until end of turn.

Clickslither

Haste
Sacrifice a Goblin: This creature gets +2/+2 and gains trample until end of turn.

Skirk Fire Marshal

Protection from red
Tap five untapped Goblins you control: This creature deals 10 damage to each creature and each player.

Akki Coalflinger

First strike
{R}, {T}: Attacking creatures gain first strike until end of turn.

Tarfire

Mountain

Forgotten Cave

This land enters tapped.
{T}: Add {R}.
Cycling {R} ({R}, Discard this card: Draw a card.)

Gempalm Incinerator

Cycling {1}{R} ({1}{R}, Discard this card: Draw a card.)
When you cycle this card, you may have it deal X damage to target creature, where X is the number of Goblins on the battlefield.

Goblin Cohort

This creature can't attack unless you've cast a creature spell this turn.

Spitting Earth

Spitting Earth deals damage to target creature equal to the number of Mountains you control.

Skirk Shaman

This creature can't be blocked except by artifact creatures and/or red creatures.

Boggart Shenanigans

Whenever another Goblin you control is put into a graveyard from the battlefield, you may have this enchantment deal 1 damage to target player or planeswalker.

Skirk Prospector

Emberwilde Augur

Sacrifice this creature: It deals 3 damage to target player or planeswalker. Activate only during your upkeep.