Chain Lightning

Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.

Wheel of Fortune

Each player discards their hand, then draws seven cards.

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.

Goblin Balloon Brigade

{R}: This creature gains flying until end of turn.

Ball Lightning

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Blood Lust

If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.

Earthquake

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

Granite Gargoyle

Flying
{R}: This creature gets +0/+1 until end of turn.

Mountain

Roc of Kher Ridges

Wall of Earth

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Pyrotechnics

Pyrotechnics deals 4 damage divided as you choose among any number of targets.

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.

Eternal Flame

Eternal Flame deals X damage to target opponent or planeswalker and half X damage, rounded up, to you, where X is the number of Mountains you control.