Have

Raid Bombardment

Whenever a creature you control with power 2 or less attacks, Raid Bombardment deals 1 damage to the player or planeswalker that creature is attacking.

Rage Reflection

Creatures you control have double strike.

Goblin Shortcutter

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

Goblin Balloon Brigade

{R}: Goblin Balloon Brigade gains flying until end of turn.

Lowland Oaf

{T}: Target Goblin creature you control gets +1/+0 and gains flying until end of turn. Sacrifice that creature at the beginning of the next end step.

Arms Dealer

{1}{R}, Sacrifice a Goblin: Arms Dealer deals 4 damage to target creature.

Grotag Thrasher

Whenever Grotag Thrasher attacks, target creature can't block this turn.

Goblin War Paint

Enchant creature
Enchanted creature gets +2/+2 and has haste.

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Bone Shaman

{B}: Until end of turn, Bone Shaman gains "Creatures dealt damage by Bone Shaman this turn can't be regenerated this turn."

Goblin Sky Raider

Flying (This creature can't be blocked except by creatures with flying or reach.)

Maniacal Rage

Enchant creature
Enchanted creature gets +2/+2 and can't block.

Slaughter Cry

Target creature gets +3/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Getting

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Hamletback Goliath

Whenever another creature enters, you may put X +1/+1 counters on Hamletback Goliath, where X is that creature's power.

Goblin Rally

Create four 1/1 red Goblin creature tokens.

Canyon Minotaur

Krenko's Command

Create two 1/1 red Goblin creature tokens.

Bloodmark Mentor

Red creatures you control have first strike.

Trumpet Blast

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

Goblin

Grotag Siege-Runner

{R}, Sacrifice Grotag Siege-Runner: Destroy target creature with defender. Grotag Siege-Runner deals 2 damage to that creature's controller.

Bladetusk Boar

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Blood Ogre

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters with a +1/+1 counter on it.)
First strike (This creature deals combat damage before creatures without first strike.)

Hatchet Bully

{2}{R}, {T}, Put a -1/-1 counter on a creature you control: Hatchet Bully deals 2 damage to any target.

Lavafume Invoker

{8}: Creatures you control get +3/+0 until end of turn.

Flame Slash

Flame Slash deals 4 damage to target creature.

Kindled Fury

Target creature gets +1/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Rustrazor Butcher

First strike
Wither (This deals damage to creatures in the form of -1/-1 counters.)

Goblin Piker

Quest for the Goblin Lord

Whenever a Goblin you control enters, you may put a quest counter on Quest for the Goblin Lord.
As long as Quest for the Goblin Lord has five or more quest counters on it, creatures you control get +2/+0.

Goblin Fireslinger

{T}: Goblin Fireslinger deals 1 damage to target player or planeswalker.

Bonesplitter

Krark-Clan Ogre

{R}, Sacrifice an artifact: Target creature can't block this turn.

Downhill Charge

You may sacrifice a Mountain rather than pay this spell's mana cost.
Target creature gets +X/+0 until end of turn, where X is the number of Mountains you control.

Raging Goblin

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

Empty the Warrens

Create two 1/1 red Goblin creature tokens.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Don't Have

Goblinslide

Whenever you cast a noncreature spell, you may pay {1}. If you do, create a 1/1 red Goblin creature token with haste.

Torch Slinger

Kicker {1}{R} (You may pay an additional {1}{R} as you cast this spell.)
When Torch Slinger enters, if it was kicked, it deals 2 damage to target creature.

Pygmy Pyrosaur

Pygmy Pyrosaur can't block.
{R}: Pygmy Pyrosaur gets +1/+0 until end of turn.

Goblin Roughrider

War-Torch Goblin

{R}, Sacrifice War-Torch Goblin: It deals 2 damage to target blocking creature.

Utvara Scalper

Flying
Utvara Scalper attacks each combat if able.

Fling

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.

Goblin Replica

{3}{R}, Sacrifice Goblin Replica: Destroy target artifact.

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

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.

Outrage Shaman

Chroma — When Outrage Shaman enters, it deals damage to target creature equal to the number of red mana symbols in the mana costs of permanents you control.

Goblin Bushwhacker

Kicker {R} (You may pay an additional {R} as you cast this spell.)
When this creature enters, if it was kicked, creatures you control get +1/+0 and gain haste until end of turn.

Screaming Fury

Target creature gets +5/+0 and gains haste until end of turn.

Akoum Boulderfoot

When Akoum Boulderfoot enters, it deals 1 damage to any target.

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.

Needlepeak Spider

Skirk Drill Sergeant

Whenever Skirk Drill Sergeant 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.

Bonebreaker Giant

Drooling Ogre

Whenever a player casts an artifact spell, that player gains control of Drooling Ogre. (This effect lasts indefinitely.)

Goblin Tunneler

{T}: Target creature with power 2 or less can't be blocked this turn.

Hill Giant

Blind-Spot Giant

Blind-Spot Giant can't attack or block unless you control another Giant.

Ogre Resister

Ogre Sentry

Goblin Diplomats

{T}: Each creature attacks this turn if able.

Burst of Speed

Creatures you control gain haste until end of turn. (They can attack and {T} even if they just came under your control.)

Fleshpulper Giant

When Fleshpulper Giant enters, you may destroy target creature with toughness 2 or less.

Goblin Artillery

{T}: Goblin Artillery deals 2 damage to any target and 3 damage to you.

Dogpile

Dogpile deals damage to any target equal to the number of attacking creatures you control.

Deathforge Shaman

Multikicker {R} (You may pay an additional {R} any number of times as you cast this spell.)
When Deathforge Shaman enters, it deals damage to target player or planeswalker equal to twice the number of times it was kicked.

Battle-Rattle Shaman

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