Innistrad

Flying Other Spirit creatures you control get +0/+1.

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

Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it.

Whenever another creature dies, Rage Thrower deals 2 damage to target player or planeswalker.

When Pitchburn Devils dies, it deals 3 damage to any target.

Night Revelers has haste as long as an opponent controls a Human.

First strike At the beginning of each upkeep, if no spells were cast last turn, transform Kruin Outlaw.

{1}{R}: Kessig Wolf gains first strike until end of turn.

When Fiend Hunter enters the battlefield, you may exile another target creature. When Fiend Hunter leaves the battlefield, return the exiled card ...

Attacking creatures you control get +1/+0. At the beginning of each upkeep, if no spells were cast last turn, transform Instigator Gang.

Defender At the beginning of each upkeep, if no spells were cast last turn, transform Hanweir Watchkeep.

Trample {1}{R}: Feral Ridgewolf gets +2/+0 until end of turn.

Flying, haste Whenever Falkenrath Marauders deals combat damage to a player, put two +1/+1 counters on it.

When Crossway Vampire enters the battlefield, target creature can't block this turn.

At the beginning of your upkeep, return an instant or sorcery card at random from your graveyard to your hand. Whenever you cast an instant or sorc...

Bloodcrazed Neonate attacks each combat if able. Whenever Bloodcrazed Neonate deals combat damage to a player, put a +1/+1 counter on it.

First strike, vigilance Protection from Vampires, from Werewolves, and from Zombies

Flying Whenever Balefire Dragon deals combat damage to a player, it deals that much damage to each creature that player controls.

Whenever another Human creature dies, put a +1/+1 counter on Village Cannibals.

Unbreathing Horde enters the battlefield with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard. If Un...

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When Elder Cathar dies, put a +1/+1 counter on target creature you control. If that creature is a Human, put two +1/+1 counters on it instead.

Whenever Stromkirk Patrol deals combat damage to a player, put a +1/+1 counter on it.

Morbid — {T}, Tap two untapped creatures you control: Create a 5/5 black Demon creature token with flying. Activate only if a creature died this turn.