Corrupt

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

Murderous Redcap

When Murderous Redcap enters the battlefield, it deals damage equal to its power to any target.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner’s control with a -1/-1 counter on it.)

Twilight Drover

Whenever a creature token leaves the battlefield, put a +1/+1 counter on Twilight Drover.
, Remove a +1/+1 counter from Twilight Drover: Create two 1/1 white Spirit creature tokens with flying.

Qasali Pridemage

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
, Sacrifice Qasali Pridemage: Destroy target artifact or enchantment.

Doomgape

Trample
At the beginning of your upkeep, sacrifice a creature. You gain life equal to that creature’s toughness.

Putrid Leech

Pay 2 life: Putrid Leech gets +2/+2 until end of turn. Activate this ability only once each turn.

Stingerfling Spider

Reach
When Stingerfling Spider enters the battlefield, you may destroy target creature with flying.

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Elder Mastery

Enchant creature
Enchanted creature gets +3/+3 and has flying.
Whenever enchanted creature deals damage to a player, that player discards two cards.

Behemoth Sledge

Equipped creature gets +2/+2 and has trample and lifelink.
Equip

Cemetery Reaper

Other Zombie creatures you control get +1/+1.
, : Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token.

Stingerfling Spider

Reach
When Stingerfling Spider enters the battlefield, you may destroy target creature with flying.

Duergar Hedge-Mage

When Duergar Hedge-Mage enters the battlefield, if you control two or more Mountains, you may destroy target artifact.
When Duergar Hedge-Mage enters the battlefield, if you control two or more Plains, you may destroy target enchantment.

Valley Rannet

Mountaincycling , forestcycling (, Discard this card: Search your library for a Mountain or Forest card, reveal it, put it into your hand, then shuffle your library.)

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Razor Swine

First strike
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Fresh Meat

Create a 3/3 green Beast creature token for each creature put into your graveyard from the battlefield this turn.

Core Prowler

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
When Core Prowler dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Caustic Hound

When Caustic Hound dies, each player loses 4 life.