msem-instigator

At the beginning of your upkeep, each player discards a card. Then if a player has no cards in hand, you may transform Performer of Ambition.

{1}{R}: Performer of Desire gets +1/+1 and gains menace until end of turn. Then if its power is 4 or greater, you may transform it.

Menace
Crew 3
You may exile two creature cards from your graveyard rather than pay Phantom Walker's crew cost.

Indestructible
As long as your devotion to black and green is less than seven, Pharika isn't a creature.
At the beginning of your upkeep, create a 1/1 green Snake creature token. If Pharika is a creature, create a 1/1 black Snake creature token with deathtouch instead.

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.

Destroy target nonland permanent if its mana value is less than or equal to the number of colors among spells you've cast this turn.

For each permanent your opponents control, create a token that's a copy of that permanent.

Menace, haste
Whenever another player casts a spell that targets Plasma Addict, that player gains control of Plasma Addict.

{X}, {T}, Sacrifice an artifact: Exile target artifact card in your graveyard with mana value X. Create a token that's a copy of it. Activate only as a sorcery.