
Carnival Hellsteed | Creature | Nightmare Horse | First strike, haste
Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.) | Chase Stone

Dreadbore | Sorcery | | Destroy target creature or planeswalker. | Wayne Reynolds

Havoc Festival | Enchantment | | Players can't gain life.
At the beginning of each player's upkeep, that player loses half their life, rounded up. | Johannes Voss

Slaughter Games | Sorcery | | This spell can't be countered.
Choose a nonland card name. Search target opponent's graveyard, hand, and library for any number of cards with that name and exile them. Then that player shuffles. | Steve Prescott

Cryptborn Horror | Creature | Horror | Trample
Cryptborn Horror enters the battlefield with X +1/+1 counters on it, where X is the total life lost by your opponents this turn. | Richard Wright

Abrupt Decay | Instant | | This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less. | Svetlin Velinov

Corpsejack Menace | Creature | Fungus | If one or more +1/+1 counters would be put on a creature you control, twice that many +1/+1 counters are put on it instead. | Chris Rahn

Jarad's Orders | Sorcery | | Search your library for up to two creature cards and reveal them. Put one into your hand and the other into your graveyard. Then shuffle. | Svetlin Velinov

Lotleth Troll | Creature | Zombie Troll | Trample
Discard a creature card: Put a +1/+1 counter on Lotleth Troll.
{B}: Regenerate Lotleth Troll. | Vincent Proce

Deathrite Shaman | Creature | Elf Shaman | {T}: Exile target land card from a graveyard. Add one mana of any color.
{B}, {T}: Exile target instant or sorcery card from a graveyard. Each opponent loses 2 life.
{G}, {T}: Exile target creature card from a graveyard. You gain 2 life. | Steve Argyle