Goblin Burrows

{T}: Add {C}.
{1}{R}, {T}: Target Goblin creature gets +2/+0 until end of turn.

Reckless One

Haste
Reckless One's power and toughness are each equal to the number of Goblins on the battlefield.

Mountain

Threaten

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

Goblin Taskmaster

{1}{R}: Target Goblin creature gets +1/+0 until end of turn.
Morph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Shock

Goblin Sledder

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

Forgotten Cave

This land enters tapped.
{T}: Add {R}.
Cycling {R} ({R}, Discard this card: Draw a card.)

Solar Blast

Solar Blast deals 3 damage to any target.
Cycling {1}{R}{R} ({1}{R}{R}, Discard this card: Draw a card.)
When you cycle this card, you may have it deal 1 damage to any target.

Skirk Prospector

Aggravated Assault

{3}{R}{R}: Untap all creatures you control. After this main phase, there is an additional combat phase followed by an additional main phase. Activate only as a sorcery.

Goblin Piledriver

Protection from blue (This creature can't be blocked, targeted, dealt damage, or enchanted by anything blue.)
Whenever this creature attacks, it gets +2/+0 until end of turn for each other attacking Goblin.

Sparksmith

{T}: This creature deals X damage to target creature and X damage to you, where X is the number of Goblins on the battlefield.

Skirk Commando

Whenever this creature deals combat damage to a player, you may have it deal 2 damage to target creature that player controls.
Morph {2}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)