Goblin Grenade

As an additional cost to cast this spell, sacrifice a Goblin.
Goblin Grenade deals 5 damage to any target.

Spire Barrage

Spire Barrage deals damage to any target equal to the number of Mountains you control.

Rummaging Goblin

Goblin Matron

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

Blindblast

Blindblast deals 1 damage to target creature. That creature can't block this turn.
Draw a card.

Mogg Fanatic

Sacrifice Mogg Fanatic: It deals 1 damage to any target.

Gravitic Punch

Target creature you control deals damage equal to its power to target player.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Mountain

Goblin Heelcutter

Whenever Goblin Heelcutter attacks, target creature can't block this turn.
Dash {2}{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.)

Boros Locket

{T}: Add {R} or {W}.
{R/W}{R/W}{R/W}{R/W}, {T}, Sacrifice Boros Locket: Draw two cards.

Crash Through

Creatures you control gain trample until end of turn. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)
Draw a card.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Raging Goblin

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

Cosmotronic Wave

Cosmotronic Wave deals 1 damage to each creature your opponents control. Creatures your opponents control can't block this turn.

Goblin Assault Team

Haste
When Goblin Assault Team dies, put a +1/+1 counter on target creature you control.

Temur Battle Rage

Target creature gains double strike until end of turn.
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Prophetic Ravings

Enchant creature
Enchanted creature has haste and "{T}, Discard a card: Draw a card."

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.)

Magmatic Chasm

Creatures without flying can't block this turn.

Goblin Freerunner

Surge {1}{R} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)
Menace (This creature can't be blocked except by two or more creatures.)

Lavastep Raider

{2}{R}: Lavastep Raider gets +2/+0 until end of turn.

Brute Strength

Target creature gets +3/+1 and gains trample until end of turn.

Makindi Sliderunner

Trample
Landfall — Whenever a land enters the battlefield under your control, Makindi Sliderunner gets +1/+1 until end of turn.

Zada's Commando

First strike
Cohort — {T}, Tap an untapped Ally you control: Zada's Commando deals 1 damage to target opponent or planeswalker.

Goblin War Paint

Enchant creature
Enchanted creature gets +2/+2 and has haste.

Fanatical Firebrand

Haste
{T}, Sacrifice Fanatical Firebrand: It deals 1 damage to any target.

Valakut Predator

Landfall — Whenever a land enters the battlefield under your control, Valakut Predator gets +2/+2 until end of turn.