Artifact Possession

Enchant artifact
Whenever enchanted artifact becomes tapped or a player activates an ability of enchanted artifact without {T} in its activation cost, Artifact Possession deals 2 damage to that artifact's controller.

Howling Mine

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

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.

Hyperion Blacksmith

{T}: You may tap or untap target artifact an opponent controls.

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.

Sisters of the Flame

Boris Devilboon

{2}{B}{R}, {T}: Create a 1/1 black and red Demon creature token named Minor Demon.

Detonate

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

Swamp

Earthquake

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

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Mountain

Land's Edge

Discard a card: If the discarded card was a land card, Land's Edge deals 2 damage to target player or planeswalker. Any player may activate this ability.

Fork

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

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.

Erg Raiders

At the beginning of your end step, if Erg Raiders didn't attack this turn, Erg Raiders deals 2 damage to you unless it came under your control this turn.

Barktooth Warbeard

Sol Ring

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Inferno

Inferno deals 6 damage to each creature and each player.

Pavel Maliki

{B}{R}: Pavel Maliki gets +1/+0 until end of turn.

Pyrotechnics

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

Howl from Beyond

Target creature gets +X/+0 until end of turn.