Goblin Flotilla

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
At the beginning of each combat, unless you pay {R}, whenever Goblin Flotilla blocks or becomes blocked by a creature this combat, that creature gains first strike until end of turn.

Goblin Grenade

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

Goblin Chirurgeon

Sacrifice a Goblin: Regenerate target creature.

Dwarven Soldier

Whenever Dwarven Soldier blocks or becomes blocked by one or more Orcs, Dwarven Soldier gets +0/+2 until end of turn.

Aeolipile

{1}, {T}, Sacrifice Aeolipile: It deals 2 damage to any target.

Goblin Warrens

{2}{R}, Sacrifice two Goblins: Create three 1/1 red Goblin creature tokens.

Mountain

Dwarven Catapult

Dwarven Catapult deals X damage divided evenly, rounded down, among all creatures target opponent controls.