Black Vise

As Black Vise enters, choose an opponent.
At the beginning of the chosen player's upkeep, Black Vise deals X damage to that player, where X is the number of cards in their hand minus 4.

Gauntlet of Might

Red creatures get +1/+1.
Whenever a Mountain is tapped for mana, its controller adds an additional {R}.

Iron Star

Whenever a player casts a red spell, you may pay {1}. If you do, you gain 1 life.

Mox Ruby

Goblin Balloon Brigade

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

Orcish Artillery

{T}: Orcish Artillery deals 2 damage to any target and 3 damage to you.

Mountain

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.

Wheel of Fortune

Each player discards their hand, then draws seven cards.

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Goblin King

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

Orcish Oriflamme

Attacking creatures you control get +1/+0.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Sol Ring

Fork

Copy target instant or sorcery spell, except that the copy is red. You may choose new targets for the copy.

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.