msem-instigator

Flying, lifelink
Improve {1}{W/B} ({1}{W/B}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Once each turn, when you gain life, you may have each opponent lose 2 life.

Put any number of target creature cards from your graveyard on top of your library. You draw two cards and you lose 2 life.

Destroy target creature. Create a tapped Treasure token.

Whenever another creature you control dies, put a +1/+1 counter on Belligerent Mob.

Lifelink
{1}{B}, Sacrifice Bloodbond Ritualist: Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

When Carrion Sculptor enters the battlefield, create a 2/2 black Zombie creature token.
{2}{B}, Sacrifice a creature: Return target creature card from your graveyard to your hand.
{1}{B}, Exile Carrion Sculptor from your graveyard: Create a tapped 2/2 black Zombie creature token.

When Catacomb Dredger dies, return another target creature card from your graveyard to your hand.

Flash
When Charnel Legion enters the battlefield, destroy target creature or planeswalker an opponent controls that was dealt damage this turn. When you do, you gain 2 life.

Whenever Coincutter Agent attacks, you draw a card and you lose 1 life.

Flash
Enchant creature
Enchanted creature gets -2/-2 and can't block creatures you control.

When target creature you control dies this turn, return it or another creature card with an equal or lesser mana value from your graveyard to the battlefield tapped.

Enchant creature
You may cast this spell from your graveyard if it targets a legendary creature you control.
Enchanted creature gets +2/+2 and has deathtouch.

Search your library for a card, exile it face down, then shuffle. For as long as that card remains exiled, you may cast it. It costs {2} more to cast this way if you don't control a legendary creature as you cast that spell.

Daggersworn Elite enters the battlefield tapped.
Whenever Daggersworn Elite and at least two other creatures attack, you may pay {1}{B}. If you do, destroy target tapped creature.

When Dark Bargain enters the battlefield, you draw a card and you lose 1 life.
{B}, Sacrifice Dark Bargain: You draw a card and you lose 1 life.

Each opponent sacrifices a creature, then loses 4 life. You return a creature card from your graveyard to your hand, then gain 4 life.

{1}, Sacrifice another creature: Put a +1/+1 counter on Dread Cabalist and on up to one target legendary creature. Activate only as a sorcery.

Flying
When Dreadworld Demon enters the battlefield, each opponent may have you draw a card. Each player who doesn't loses 3 life. You gain life equal to the life lost this way.

Improve {1}{B} ({1}{B}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Once each turn, when you gain life, you may have each opponent loses 1 life.

Flying
When Endmire Raven dies, each opponent loses 2 life and you gain 2 life.

{B}, {T}, Exile two cards from your graveyard: Create a 1/1 white Spirit creature token with flying.

When Heretic's Vow enters the battlefield, create two 1/1 white Cleric creature tokens with lifelink.
Once each turn, when you gain life, you may put a +1/+1 counter on target creature you control.

At the beginning of your upkeep, if you control a legendary creature, you draw a card and you lose 1 life.

Destroy all creatures and planeswalkers with mana value X or less.

Whenever a creature you control leaves the battlefield, if it had counters on it, you may put one of those counters on Ironpact Marauder.
{1}{B}, Remove two counters from Ironpact Marauder: You draw a card and you lose 1 life.