msem-instigator

Target creature gets -3/-3 until end of turn. Scry 2.

At the beginning of your upkeep, reveal the bottom card of your library, then you may pay {B} and 3 life. If you do, put it into your hand. Otherwise, exile it.

Pressure {B} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Search your library for a card, put it into your graveyard, then shuffle. You gain 2 life.

Destroy target creature. You gain 1 life for each card in its controller's graveyard.

Search your library for a card, put it into your graveyard, then shuffle. (Then exile this card. You may cast the creature later from exile.)

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets -2/-2.
Whenever enchanted creature blocks, its controller loses 2 life.

Call of the Abyss deals 3 damage to any target and you gain 3 life.

Each player sacrifices a creature. Then return a creature card with mana value 3 or less from your graveyard to the battlefield.

Search your library for a card and put it into your hand, then shuffle. You lose life equal to the number of cards in your hand.

Until end of turn, all creatures gain deathtouch and “When this creature dies, its controller loses 2 life.”

When Carrion Scythe enters, if you cast it, you may return target creature card from your graveyard to the battlefield, then attach Carrion Scythe to it.
Equipped creature gets +1/+1 and has deathtouch.
Equip {2}

Choose one —
• You draw two cards and you lose 2 life.
• Target player discards two cards and you gain 2 life.

Glitch {1} (Remove one [restriction] for each time you pay the glitch cost.)
Each opponent loses 3 life, discards a card, sacrifices a creature, then sacrifices a land.
[You lose 3 life.] [Discard a card.] [Sacrifice a creature.] [Sacrifice a land.]

Bleed {1}{B}{B} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
All creatures get -4/-4 until end of turn.

Look at the top three cards of your library. Put one into your hand and the rest into your graveyard. You lose 1 life.

[+1]: Each opponent loses 1 life and you gain 1 life. Mill a card. If you do, you may shuffle a card from your graveyard into your library.
[0]: Any number of target players each discard a card. If you have an insight counter, return up to one creature card from your graveyard to your hand.
[0]: You get an insight counter.
[–2]: Target creature gets -3/-3 until end of turn.

Equipped creature gets +2/+1.
Whenever equipped creature attacks, you draw a card and you lose 1 life.
Equip Knight or Soldier {1}
Equip {3}

Target creature gets -1/-2 until end of turn.
Target creature gets +2/+1 until end of turn.

As an additional cost to cast this spell, sacrifice a creature or planeswalker.
Destroy target creature or planeswalker.

When Chigau, the Red Market enters, draw a card, then choose a creature card name.
Once each turn, you may cast a creature spell with the chosen name from your graveyard.

As an additional cost to cast this spell, sacrifice a creature.
Target creature gets -X/-X until end of turn, where X is the sacrificed creature's power.

Enchant creature
Enchanted creature gets -2/-2.
Mirage—{B}, Discard a card. (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

Return target creature card with power less than or equal to your fealty to Swamps from your graveyard to the battlefield. (Each Swamp you control counts towards your fealty to Swamps.)

Create a 2/2 black Zombie creature token.
Tether (Then if you cast this from your hand, you may exile it tethered to a creature you control. When it dies, you may cast this from exile without paying its mana cost.)

Target creature gets -4/-4 until end of turn.