Reckless Ogre

Whenever Reckless Ogre attacks alone, it gets +3/+0 until end of turn.

Sonic Burst

As an additional cost to cast this spell, discard a card at random.
Sonic Burst deals 4 damage to any target.

Fugue

Mind Maggots

When Mind Maggots enters, discard any number of creature cards. For each card discarded this way, put two +1/+1 counters on Mind Maggots.

Flowstone Flood

Buyback—Pay 3 life, Discard a card at random. (You may pay 3 life and discard a card at random in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)
Destroy target land.

Slaughter

Buyback—Pay 4 life. (You may pay 4 life in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)
Destroy target nonblack creature. It can't be regenerated.

Grollub

Whenever Grollub is dealt damage, each opponent gains that much life.

Entropic Specter

Flying
As Entropic Specter enters, choose an opponent.
Entropic Specter's power and toughness are each equal to the number of cards in the chosen player's hand.
Whenever Entropic Specter deals damage to a player, that player discards a card.

Onslaught

Whenever you cast a creature spell, tap target creature.

Workhorse

Workhorse enters with four +1/+1 counters on it.
Remove a +1/+1 counter from Workhorse: Add {C}.

Dauthi Jackal

Shadow (This creature can block or be blocked by only creatures with shadow.)
{B}{B}, Sacrifice Dauthi Jackal: Destroy target blocking creature.

Dauthi Warlord

Shadow (This creature can block or be blocked by only creatures with shadow.)
Dauthi Warlord's power is equal to the number of creatures on the battlefield with shadow.

Skyshaper

Sacrifice Skyshaper: Creatures you control gain flying until end of turn.

Dauthi Cutthroat

Shadow (This creature can block or be blocked by only creatures with shadow.)
{1}{B}, {T}: Destroy target creature with shadow.

Erratic Portal

{1}, {T}: Return target creature to its owner's hand unless its controller pays {1}.

Furnace Brood

{R}: Target creature can't be regenerated this turn.

Cursed Flesh

Enchant creature
Enchanted creature gets -1/-1 and has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

Shattering Pulse

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Destroy target artifact.

Nausea

All creatures get -1/-1 until end of turn.

Scare Tactics

Creatures you control get +1/+0 until end of turn.

Swamp

Carnophage

At the beginning of your upkeep, tap Carnophage unless you pay 1 life.

Fighting Chance

For each blocking creature, flip a coin. If you win the flip, prevent all combat damage that would be dealt by that creature this turn.

Mountain

Death's Duet

Return two target creature cards from your graveyard to your hand.

Recurring Nightmare

Sacrifice a creature, Return Recurring Nightmare to its owner's hand: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Raging Goblin

Haste (This creature can attack and {T} as soon as it comes under your control.)

Culling the Weak

As an additional cost to cast this spell, sacrifice a creature.
Add {B}{B}{B}{B}.

Transmogrifying Licid

{1}, {T}: Transmogrifying Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {1} to end this effect.
Enchanted creature gets +1/+1 and is an artifact in addition to its other types.

Keeper of the Dead

{B}, {T}: Choose target opponent who has at least two fewer creature cards in their graveyard than you do as you activate this ability. Destroy target nonblack creature that player controls.