msem-instigator

As an additional cost to cast this spell, discard a card.
Search your library for a card with mana value X or less, where X is 1 plus the discarded card's mana value, reveal it, put it into your hand, then shuffle.

Harvest (You may tap any number of creatures you control as you cast this spell. If you do, reduce this spell's mana cost by their total power.)
Each opponent sacrifices a nontoken permanent.

Enchant player
At the beginning of enchanted player's upkeep, up to two target creatures they control gain winnow until end of turn. (Damage dealt to a creature with winnow also causes its controller to lose that much life.)

{1}: Exile target card from a graveyard. That card's owner may scry 1.

Reveal the bottom card of your library. You may put it on top of your library. Target creature gets -0/-X until end of turn, where X is that card's mana value.

({T}: Add {B}.)
Forgotten Pit enters tapped.
Deathtouch
{2}{B}{B}: Forgotten Pit becomes a creature in addition to its other types until end of turn.

Return target creature or land card from your graveyard to your hand.

Return target creature card from your graveyard to your hand.

When Forgotten Wretch enters, you may sacrifice another creature. If you do, draw a card.

When Forlorn Murklurker dies, submerge the top card of your library. (To submerge a card, exile it, then put it on the battlefield face down under its owner's control as a 2/2 creature.)

Target creature you control gets +3/+0 and gains lifelink and indestructible until end of turn.

Choose any number of target creature and/or planeswalker cards in your graveyard. Return one of them to the battlefield and put the rest on top of your library in any order.

Flying
Mark (Whenever this creature attacks, mark target creature until end of turn.)
Whenever a marked creature dies, you gain 2 life.

Whenever you cast a noncreature spell, each opponent loses 1 life and you gain 1 life.

Enchant opponent
At the beginning of enchanted player's upkeep, they lose 1 life and each of their opponents gains 1 life.
{4}{B}, Sacrifice Forsaken Shores: Enchanted player loses 3 life and you gain 3 life.

Menace
When Fortune Hoarder dies, each player discards a card at random.

Flying
When Foul Drifter enters, target creature gets -1/-1 until end of turn.

Flying
When Foul Vulture enters, create a 1/1 red Hound creature token.
Foul Vulture gets +1/+0 as long as a creature you controlled died this turn.

Deathtouch
Attacking creatures you control with deathtouch get +2/+0.

Target creature gets -1/-1 until end of turn. If that creature is tapped, it gets -3/-3 until end of turn instead.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Return up to two target creature cards from your graveyard to your hand.
3 | You may put a creature card with mana value 3 or less from your hand onto the battlefield.

Lifelink
Frenzied Watchkeeper enters with six -1/-1 counters on it.
At the beginning of each end step, if an opponent lost life this turn, remove a -1/-1 counter from Frenzied Watchkeeper.

As an additional cost to cast this spell, you may sacrifice a creature.
Create a 1/1 green Insect creature token. If you sacrificed a creature to cast this spell, create three of those tokens instead.

Whenever one or more cards leave your graveyard for the first time each turn, each player loses 1 life and you draw a card.

At the beginning of your end step, if a card left your graveyard this turn, create a 3/1 black Human Rogue creature token named Shengin Renegade.