Goblin Trashmaster

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

Mana Echoes

Whenever a creature enters, you may add an amount of {C} equal to the number of creatures you control that share a creature type with it.

Goblin Battle Jester

Whenever you cast a red spell, target creature can't block this turn.

Hobgoblin Bandit Lord

Other Goblins you control get +1/+1.
{R}, {T}: This creature deals damage equal to the number of Goblins that entered the battlefield under your control this turn to any target.

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.

Goblin Snowman

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

Snow-Covered Mountain

Goblin Cratermaker

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

Umbral Mantle

Equipped creature has "{3}, {Q}: This creature gets +2/+2 until end of turn." ({Q} is the untap symbol.)
Equip {0}

Goblin General

Whenever this creature attacks, Goblin creatures you control get +1/+1 until end of turn.

Goblin Spelunkers

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Goblins of the Flarg

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
When you control a Dwarf, sacrifice this creature.

Goblin Gang Leader

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

Goblin Chirurgeon

Sacrifice a Goblin: Regenerate target creature.

Crazed Goblin

This creature attacks each combat if able.

Blood Moon

Krenko, Mob Boss

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

Goblin Goon

This creature can't attack unless you control more creatures than defending player.
This creature can't block unless you control more creatures than attacking player.

Goblin Archaeologist

{R}, {T}: Flip a coin. If you win the flip, destroy target artifact and untap this creature. If you lose the flip, sacrifice this creature.

Goblin Grenadiers

Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, destroy target creature and target land.