Goblin Sledder

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

Burning Inquiry

Each player draws three cards, then discards three cards at random.

Gamble

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Cinderclasm

Kicker {R} (You may pay an additional {R} as you cast this spell.)
Cinderclasm deals 1 damage to each creature. If it was kicked, it deals 2 damage to each creature instead.

Mountain

Coming In Hot

Target creature gets +1/+0 and gains first strike until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Mogg Flunkies

Mogg Flunkies can't attack or block alone.

Spear Spewer

Defender
{T}: Spear Spewer deals 1 damage to each player.

Goblin Balloon Brigade

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

Hydroblast

Choose one —
• Counter target spell if it's red.
• Destroy target permanent if it's red.

Flick a Coin

Flick a Coin deals 1 damage to any target. You create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
Draw a card.

Guise of Fire

Enchant creature
Enchanted creature gets +1/-1 and attacks each combat if able.

Island

Chromatic Sphere

{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.

Seize the Spoils

As an additional cost to cast this spell, discard a card.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Straw Golem

When an opponent casts a creature spell, sacrifice Straw Golem.

Tarfire

Panic Spellbomb

{T}, Sacrifice Panic Spellbomb: Target creature can't block this turn.
When Panic Spellbomb is put into a graveyard from the battlefield, you may pay {R}. If you do, draw a card.

Goblin Cratermaker

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

Deface

Choose one —
• Destroy target artifact.
• Destroy target creature with defender.

Tormenting Voice

As an additional cost to cast this spell, discard a card.
Draw two cards.

Goblin Matron

When Goblin Matron enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.