Faceless Butcher

When Faceless Butcher enters the battlefield, exile target creature other than Faceless Butcher.
When Faceless Butcher leaves the battlefield, return the exiled card to the battlefield under its owner’s control.

Gravegouger

When Gravegouger enters the battlefield, exile up to two target cards from a single graveyard.
When Gravegouger leaves the battlefield, return the exiled cards to their owner’s graveyard.

Deep Analysis

Target player draws two cards.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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.

Patrol Hound

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

Cantivore

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

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.)

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.

Velican Dragon

Flying
Whenever Velican Dragon attacks or blocks, it gets +X/+0 until end of turn, where X is a number from 0 to 5 chosen at random.

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.

Kavu Mauler

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

Brass Herald

As Brass Herald enters the battlefield, choose a creature type.
When Brass Herald enters the battlefield, 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.

Glade Gnarr

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

Mystic Snake

Flash
When Mystic Snake enters the battlefield, counter target spell.

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 the battlefield, target player discards two cards.

Bloodshot Cyclops

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

Spirit Link

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

Cavern Harpy

Flying
When Cavern Harpy enters the battlefield, return a blue or black creature you control to its owner’s hand.
Pay 1 life: Return Cavern Harpy to its owner’s hand.

Sleeping Potion

Enchant creature
When Sleeping Potion enters the battlefield, tap enchanted creature.
Enchanted creature doesn’t untap during its controller’s untap step.
When enchanted creature becomes the target of a spell or ability, sacrifice Sleeping Potion.

Oath of Druids

At the beginning of each player’s upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard.