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.

Earthquake

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

Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Wrath of God

Destroy all creatures. They can't be regenerated.

Disenchant

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Plains

Shivan Dragon

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

Mountain

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

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.