msem-instigator

Enchant creature
Enchanted creature gets -2/-2.
At the beginning of the upkeep of enchanted creature's controller, that player discards a card.

Enchant creature
When Double Arming enters, put a +1/+1 counter on enchanted creature.
Enchanted creature has menace.
{5}: Return Double Arming to its owner's hand.

This spell costs {2} less to cast if you control a Rogue.
Target opponent discards two cards.

Enchant opponent
When Down with the Ship enters, enchanted player discards a card unless they sacrifice a creature.
{1}{B}, Sacrifice Down with the Ship: Return target creature card from your graveyard to your hand.

Target creature gets -2/-1 until end of turn. When it dies this turn, its controller loses 5 life.

Return up to one target creature card from your graveyard to the battlefield tapped. You gain 2 life.
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.)

This spell costs {X} less to cast, where X is the number of card types among cards in your graveyard.
Surveil 3, then you draw three cards. You lose 3 life.

Target player reveals their hand. You choose a nonland card from it. That player discards that card, then mills four cards.

All creatures get -2/-2 until end of turn. Scry 1.

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

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Investigate, then target creature gets -1/-1 until end of turn for each Clue you control. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

At the beginning of combat on your turn, you may sacrifice a creature. If you do, creatures you control get +2/+1 until end of turn.

As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}.
Exile target creature or planeswalker.

Target creature and all creatures with the same name as that creature get +2/+1 and gain lifelink until end of turn.

Target player discards a card. If that player discards a land card this way, they lose 3 life.

Whenever a nontoken creature you control dies, you may put a +1/+1 counter on target creature. If you do, that creature's controller loses 1 life.

{0}: Until end of turn, Eldritch Egg becomes a copy of target permanent card in a graveyard with mana value 6 or less except it's an artifact. Activate only once each turn. (It has no other card types.)

You may cast this spell as though it had flash if you control a Horror creature.
Destroy all non-Horror creatures.

[+1]: Create a tapped colorless Bullet artifact token with “{T}, Sacrifice this artifact: It deals 1 damage to any target.”
[–1]: Exile target creature or planeswalker that was dealt damage this turn.
[–7]: You get an emblem with “At the beginning of each end step, you may draw X cards, where X is the amount of life your opponents lost this turn.”

Choose one —
• Each opponent sacrifices a nonlegendary creature.
• Each opponent sacrifices a legendary creature or planeswalker.

Whenever you discard a card this turn, add {B}. Then you may cast that card. (You still pay its costs.)

Until end of turn, target creature becomes black, gets +1/+0, and gains indestructible.

Enchant creature
Enchanted creature gets -3/-3.

Exile target player's graveyard.