Nosy Goblin

{T}, Sacrifice Nosy Goblin: Destroy target face-down creature.

Mardu Scout

Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Guttersnipe

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

Krark-Clan Stoker

Goblin Snowman

Whenever Goblin Snowman blocks, prevent all combat damage that would be dealt to and dealt by it this turn.
{T}: Goblin Snowman deals 1 damage to target creature it's blocking.

Goblin Sledder

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

Goblin Chirurgeon

Sacrifice a Goblin: Regenerate target creature.

Goblin Brigand

Goblin Brigand attacks each combat if able.

Extra Arms

Enchant creature
Whenever enchanted creature attacks, it deals 2 damage to any target.

Goblin Cratermaker

{1}, Sacrifice Goblin Cratermaker: Choose one —
• Goblin Cratermaker deals 2 damage to target creature.
• Destroy target colorless nonland permanent.

Mountain

Dogpile

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

Sparksmith

{T}: Sparksmith deals X damage to target creature and X damage to you, where X is the number of Goblins on the battlefield.

Goblin Striker

Misguided Rage

Raging Redcap

Raging Goblin

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

Skirk Prospector

Krark-Clan Engineers

{R}, Sacrifice two artifacts: Destroy target artifact.

Goblin Assailant

Gempalm Incinerator

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

Riot Piker

First strike
Riot Piker attacks each combat if able.

Krenko, Mob Boss

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