Goblin Grenade

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

Krenko's Command

Create two 1/1 red Goblin creature tokens.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

Enchant land
When Abundant Growth enters, draw a card.
Enchanted land has "{T}: Add one mana of any color."

{1}{R}, Sacrifice a Goblin: Arms Dealer deals 4 damage to target creature.

Creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Haste (This creature can attack and {T} as soon as it comes under your control.)
Other Goblin creatures you control get +1/+1 and have haste.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Haste
Whenever a creature you control attacks, Hellrider deals 1 damage to the player or planeswalker it's attacking.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.