Goblin Turncoat

Sacrifice a Goblin: Regenerate this creature.

Facevaulter

{B}, Sacrifice a Goblin: This creature gets +2/+2 until end of turn.

Prickly Boggart

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Squee, Goblin Nabob

At the beginning of your upkeep, you may return this card from your graveyard to your hand.

Mad Auntie

Other Goblin creatures you control get +1/+1.
{T}: Regenerate another target Goblin.

Akki Avalanchers

Sacrifice a land: This creature gets +2/+0 until end of turn. Activate only once each turn.

Nath's Buffoon

Sling-Gang Lieutenant

When Sling-Gang Lieutenant enters, create two 1/1 red Goblin creature tokens.
Sacrifice a Goblin: Target player loses 1 life and you gain 1 life.

Frogtosser Banneret

Haste
Goblin spells and Rogue spells you cast cost {1} less to cast.

Krenko, Tin Street Kingpin

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

Grenzo, Dungeon Warden

Grenzo enters with X +1/+1 counters on it.
{2}: Put the bottom card of your library into your graveyard. If it's a creature card with power less than or equal to Grenzo's power, put it onto the battlefield.

Akki Rockspeaker

Akki Coalflinger

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

Ardoz, Cobbler of War

Haste
Whenever Ardoz or another creature you control enters, that creature gets +2/+0 until end of turn.
{3}{R}: Create a 1/1 red Goblin creature token with haste. Activate only as a sorcery.

Weirding Shaman

{3}{B}, Sacrifice a Goblin: Create two 1/1 black Goblin Rogue creature tokens.

Knucklebone Witch

Whenever a Goblin you control is put into a graveyard from the battlefield, you may put a +1/+1 counter on this creature.