Detonate

Destroy target artifact with mana value X. It can't be regenerated. Detonate deals X damage to that artifact's controller.

Uthden Troll

Immolation

Enchant creature
Enchanted creature gets +2/-2.

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.

Mountain

Fissure

Destroy target creature or land. It can't be regenerated.

Shivan Dragon

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

Hurloon Minotaur

Bird Maiden

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.

Mana Flare

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

Keldon Warlord

Keldon Warlord's power and toughness are each equal to the number of non-Wall creatures you control.