Mox Ruby

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.

Goblin King

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

Dragon Whelp

Flying
{R}: Dragon Whelp gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Dragon Whelp at the beginning of the next end step.

Mons's Goblin Raiders

Gauntlet of Might

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

Wheel of Fortune

Each player discards their hand, then draws seven cards.

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.

Mountain

Ironclaw Orcs

Ironclaw Orcs can't block creatures with power 2 or greater.

Granite Gargoyle

Flying
{R}: Granite Gargoyle gets +0/+1 until end of turn.

Fork

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

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Goblin Balloon Brigade

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