Nearheath Stalker

Young Wolf

Creature — Wolf (1/1)

Undying (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.)

Flayer of the Hatebound

Creature — Devil (4/2)

Undying (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.)
Whenever Flayer of the Hatebound or another creature enters the battlefield from your graveyard, that creature deals damage equal to its power to any target.

Afflicted Deserter // Werewolf Ransacker

Creature — Human Werewolf // Creature — Werewolf (3/2)

At the beginning of each upkeep, if no spells were cast last turn, transform Afflicted Deserter.

Werewolf Ransacker

Whenever this creature transforms into Werewolf Ransacker, you may destroy target artifact. If that artifact is put into a graveyard this way, Werewolf Ransacker deals 3 damage to that artifact's controller.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Werewolf Ransacker.

Hellrider

Creature — Devil (3/3)

Haste
Whenever a creature you control attacks, Hellrider deals 1 damage to the player or planeswalker it's attacking.

Markov Warlord

Creature — Vampire Warrior (4/4)

Haste
When Markov Warlord enters the battlefield, up to two target creatures can't block this turn.

Mondronen Shaman // Tovolar's Magehunter

Creature — Human Shaman Werewolf // Creature — Werewolf (3/2)

At the beginning of each upkeep, if no spells were cast last turn, transform Mondronen Shaman.

Tovolar's Magehunter

Whenever an opponent casts a spell, Tovolar's Magehunter deals 2 damage to that player.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Tovolar's Magehunter.

Moonveil Dragon

Creature — Dragon (5/5)

Flying
: Each creature you control gets +1/+0 until end of turn.

Russet Wolves

Creature — Wolf (3/3)

Falkenrath Aristocrat

Creature — Vampire Noble (4/1)

Flying, haste
Sacrifice a creature: Falkenrath Aristocrat gains indestructible until end of turn. If the sacrificed creature was a Human, put a +1/+1 counter on Falkenrath Aristocrat.

Huntmaster of the Fells // Ravager of the Fells

Creature — Human Werewolf // Creature — Werewolf (2/2)

Whenever this creature enters the battlefield or transforms into Huntmaster of the Fells, create a 2/2 green Wolf creature token and you gain 2 life.
At the beginning of each upkeep, if no spells were cast last turn, transform Huntmaster of the Fells.

Ravager of the Fells

Trample
Whenever this creature transforms into Ravager of the Fells, it deals 2 damage to target opponent or planeswalker and 2 damage to up to one target creature that player or that planeswalker's controller controls.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Ravager of the Fells.

Geralf's Mindcrusher

Creature — Zombie Horror (5/5)

When Geralf's Mindcrusher enters the battlefield, target player mills five cards.
Undying (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.)

Mikaeus, the Unhallowed

Legendary Creature — Zombie Cleric (5/5)

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Whenever a Human deals damage to you, destroy it.
Other non-Human creatures you control get +1/+1 and have undying. (When a creature with undying 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.)

Pyreheart Wolf

Creature — Wolf (1/1)

Whenever Pyreheart Wolf attacks, creatures you control gain menace until end of turn. (They can't be blocked except by two or more creatures.)
Undying (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.)

Relentless Skaabs

Creature — Zombie (4/4)

As an additional cost to cast this spell, exile a creature card from your graveyard.
Undying (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.)

Sightless Ghoul

Creature — Zombie Soldier (2/2)

Sightless Ghoul can't block.
Undying (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.)

Vengeful Vampire

Creature — Vampire (3/2)

Flying
Undying (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.)

Vorapede

Creature — Insect (5/4)

Vigilance, trample
Undying (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.)

Beguiler of Wills

Creature — Human Wizard (1/1)

: Gain control of target creature with power less than or equal to the number of creatures you control.

Briarpack Alpha

Creature — Wolf (3/3)

Flash (You may cast this spell any time you could cast an instant.)
When Briarpack Alpha enters the battlefield, target creature gets +2/+2 until end of turn.

Dungeon Geists

Creature — Spirit (3/3)

Flying
When Dungeon Geists enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Dungeon Geists.