Goblin Bushwhacker

Kicker {R} (You may pay an additional {R} as you cast this spell.)
When this creature enters, if it was kicked, creatures you control get +1/+0 and gain haste until end of turn.

Foundry Street Denizen

Whenever another red creature you control enters, Foundry Street Denizen gets +1/+0 until end of turn.

Mogg Conscripts

Mogg Conscripts can't attack unless you've cast a creature spell this turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Smoldering Spires

Smoldering Spires enters tapped.
When Smoldering Spires enters, target creature can't block this turn.
{T}: Add {R}.

Goblin Blast-Runner

Goblin Blast-Runner gets +2/+0 and has menace as long as you sacrificed a permanent this turn.

Goblin War Strike

Goblin War Strike deals damage to target player or planeswalker equal to the number of Goblins you control.

Akki Avalanchers

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

Frenzied Goblin

Whenever this creature attacks, you may pay {R}. If you do, target creature can't block this turn.

Reckless Lackey

First strike, haste
{2}{R}, Sacrifice Reckless Lackey: Draw a card and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Goblin Sledder

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

Mountain

Mudbutton Clanger

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Mudbutton Clanger, you may reveal it. If you do, Mudbutton Clanger gets +1/+1 until end of turn.

Raging Goblin

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