Goblin King

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

Goblin Balloon Brigade

{R}: Goblin Balloon Brigade gains flying until end of turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Disintegrate

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

Orcish Oriflamme

Attacking creatures you control get +1/+0.

Keldon Warlord

Keldon Warlord's power and toughness are each equal to the number of non-Wall creatures you control.

Wheel of Fortune

Each player discards their hand, then draws seven cards.

Mons's Goblin Raiders

Mountain

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.