Guerrilla Tactics

Guerrilla Tactics deals 2 damage to any target.
When a spell or ability an opponent controls causes you to discard Guerrilla Tactics, Guerrilla Tactics deals 4 damage to any target.

Fodder Cannon

{4}, {T}, Sacrifice a creature: Fodder Cannon deals 4 damage to target creature.

Blaze

Lightning Blast

Lightning Blast deals 4 damage to any target.

Goblin Raider

Goblin King

Other Goblins get +1/+1 and have mountainwalk.

Mountain

Demolish

Enrage

Target creature gets +X/+0 until end of turn.

Mogg Sentry

Whenever an opponent casts a spell, Mogg Sentry gets +2/+2 until end of turn.

Goblin Chariot

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

Shock

Raging Goblin

Volcanic Hammer

Volcanic Hammer deals 3 damage to any target.