msem-instigator

You draw two cards, lose 2 life, and mill two cards.

When target creature or planeswalker dies this turn, return that card to the battlefield under your control. Destroy that permanent.

Exile target creature you don't control. Its controller may search their library for a creature card with a different name, reveal it, put it into their hand, then shuffle.

Create two tapped Treasure tokens. (Then exile this card. You may cast the creature later from exile.)

Target opponent reveals their hand. You choose a nonland card from it. If you can't, they discard a card. Otherwise, that player discards a card, then if they didn't discard the chosen card, you create a tapped Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

At the beginning of your declare attackers step, create a 0/1 white Cat creature token that's tapped and attacking. Exile that token at the beginning of the next end step.

Menagerie — If there are five or more creature types among creatures you control, you may search your library for a card, then shuffle and put that card on top.
You draw two cards and you lose 2 life.

Mill three cards, then you may return a creature or land card from your graveyard to your hand.

Target player discards two cards. Forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

Destroy target creature. Create a tapped 2/2 black Zombie creature token.

You draw two cards, lose 2 life, and create a Gold token. (It's an artifact with “Sacrifice this artifact: Add one mana of any color.”)

Each opponent loses 1 life. Whenever you cast another spell this turn, each opponent loses 1 life.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life unless that player is cursed.

Choose highest or lowest. Target opponent reveals their hand and discards a card with the chosen kind of mana value among the revealed nonland cards.

Enchant player
Whenever a creature enters under enchanted player's control, they lose 1 life.

Destroy target creature. Mill two cards.

Target opponent reveals their hand. You choose a creature card from it and exile that card.
Ferocious — If you control a creature with power 4 or greater, instead choose a nonland card from their hand and exile that card.

Align X (Choose modes with total ★ less than or equal to X. You may choose modes multiple times.)
• ★ — Target player reveals their hand and discards a nonland card.
• ★★ — Destroy target creature.
• ★★★★★ — Return each creature card in target player's graveyard to the battlefield under your control.

Foretell {1}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
If this spell is foretold, you may cast it as though it had flash.
Target creature gets -3/-3 until end of turn.

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever an opponent loses 3 or more life, add a quest counter.
Destroy up to one target creature with power or toughness 2 or less.
Create Sir Jasper Reborn, a legendary 3/1 black Zombie Mouse Knight creature token with menace.
Search your library for a card, reveal it, put it into your hand, then shuffle. If you revealed a card named Karoa's Downfall this way, you may cast it without paying its mana cost.

Target creature gets -3/-3 until end of turn. You gain 3 life. (Then exile this card. You may cast the creature later from exile.)

Target creature gains deathtouch until end of turn. If that creature is an Insect, it gains first strike until end of turn.

Target creature gains deathtouch and indestructible until end of turn.

When Poisoned Shiv enters, destroy target creature or planeswalker.
Equipped creature gets +2/+0 and has deathtouch.
Equip {2}

Search your library for a land card and put that card onto the battlefield tapped with a venom counter on it. It gains “Whenever this land is tapped for mana, you lose 1 life.” Then shuffle.