Sudden Impact

Sudden Impact deals damage to target player equal to the number of cards in that player's hand.

Mire Kavu

This creature gets +1/+1 as long as you control a Swamp.

Terminate

Destroy target creature. It can't be regenerated.

Shatterstorm

Destroy all artifacts. They can't be regenerated.

Firebolt

Firebolt deals 2 damage to any target.
Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flame Burst

Flame Burst deals X damage to any target, where X is 2 plus the number of cards named Flame Burst in all graveyards.

Agonizing Demise

Kicker {1}{R} (You may pay an additional {1}{R} as you cast this spell.)
Destroy target nonblack creature. It can't be regenerated. If this spell was kicked, Agonizing Demise deals damage equal to that creature's power to the creature's controller.

Keldon Berserker

Whenever this creature attacks, if you control no untapped lands, it gets +3/+0 until end of turn.

Dark Ritual

Swamp

Bloodfire Dwarf

{R}, Sacrifice this creature: It deals 1 damage to each creature without flying.

Repentant Vampire

Flying
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.
Threshold — As long as there are seven or more cards in your graveyard, this creature is white and has "{T}: Destroy target black creature."

Shatter

Dark Banishing

Destroy target nonblack creature. It can't be regenerated.

Balduvian Horde

When this creature enters, sacrifice it unless you discard a card at random.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Mountain

Rhystic Tutor

Unless any player pays {2}, search your library for a card, put that card into your hand, then shuffle.