Whispering Shade

Swampwalk (This creature can’t be blocked as long as defending player controls a Swamp.)
: Whispering Shade gets +1/+1 until end of turn.

Dirty Wererat

, Discard a card: Regenerate Dirty Wererat.
Threshold — As long as seven or more cards are in your graveyard, Dirty Wererat gets +2/+2 and can’t block.

Cultural Exchange

Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.)

Cantivore

Vigilance
Cantivore’s power and toughness are each equal to the number of enchantment cards in all graveyards.

Patrol Hound

Discard a card: Patrol Hound gains first strike until end of turn.

Velukan Dragon

Flying
Whenever Velukan Dragon attacks or blocks, roll a six-sided die. Velukan Dragon gets +X/+0 until end of turn, where X is the result minus 1.

Murgish Cemetery

, Discard a card: Create an X/X black Zombie creature token, where X is a number from 2 to 6 chosen at random.

Mystic Snake

Flash
When Mystic Snake enters, counter target spell.

Brass Herald

As Brass Herald enters, choose a creature type.
When Brass Herald enters, reveal the top four cards of your library. Put all creature cards of the chosen type revealed this way into your hand and the rest on the bottom of your library in any order.
Creatures of the chosen type get +1/+1.

Bog Gnarr

Whenever a player casts a black spell, Bog Gnarr gets +2/+2 until end of turn.

Kavu Mauler

Trample
Whenever Kavu Mauler attacks, it gets +1/+1 until end of turn for each other attacking Kavu.

Glade Gnarr

Whenever a player casts a blue spell, Glade Gnarr gets +2/+2 until end of turn.

Spirit Link

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Whenever enchanted creature deals damage, you gain that much life.

Goblin Elite Infantry

Whenever Goblin Elite Infantry blocks or becomes blocked, it gets -1/-1 until end of turn.

Abyssal Horror

Flying
When Abyssal Horror enters, target player discards two cards.

Goblin Elite Infantry

Whenever Goblin Elite Infantry blocks or becomes blocked, it gets -1/-1 until end of turn.

Spirit Link

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Whenever enchanted creature deals damage, you gain that much life.

Bloodshot Cyclops

, Sacrifice a creature: Bloodshot Cyclops deals damage equal to the sacrificed creature’s power to any target.

Abyssal Horror

Flying
When Abyssal Horror enters, target player discards two cards.

Bloodshot Cyclops

, Sacrifice a creature: Bloodshot Cyclops deals damage equal to the sacrificed creature’s power to any target.