Dark Ritual

Boggart Birth Rite

Return target Goblin card from your graveyard to your hand.

Fodder Launch

As an additional cost to cast this spell, sacrifice a Goblin.
Target creature gets -5/-5 until end of turn. Fodder Launch deals 5 damage to that creature's controller.

Boggart Mob

Champion a Goblin (When this enters, sacrifice it unless you exile another Goblin you control. When this leaves the battlefield, that card returns to the battlefield.)
Whenever a Goblin you control deals combat damage to a player, you may create a 1/1 black Goblin Rogue creature token.

Knucklebone Witch

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

Boggart Harbinger

When Boggart Harbinger enters, you may search your library for a Goblin card, reveal it, then shuffle and put that card on top.

Mad Auntie

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

Swamp

Facevaulter

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

Slate of Ancestry

{4}, {T}, Discard your hand: Draw a card for each creature you control.

Festering Goblin

When Festering Goblin dies, target creature gets -1/-1 until end of turn.

Squeaking Pie Sneak

As an additional cost to cast this spell, reveal a Goblin card from your hand or pay {3}.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Mountain

Weirding Shaman

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

Wort, Boggart Auntie

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
At the beginning of your upkeep, you may return target Goblin card from your graveyard to your hand.