msem-instigator

[0]: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
[–2]: Exile target creature. Create a battle token with three defense and “When this battle leaves the battlefield, return the exiled card to the battlefield under its owner's control.” You're protecting it.
[–5]: Create two 0/0 black Phyrexian Germ creature tokens, then put two +1/+1 counters on each creature you control.

When Gitaxian Reprocessor enters, if you cast it, choose one —
• Create a token that's a copy of another target creature, except it's an artifact and isn't a creature.
• Create a token that's a copy of target noncreature artifact, except it's a 2/2 creature in addition to its other types.

Kuyen, Moon Spirit can't attack or block unless there are ten or more cards in your graveyard.
At the beginning of each opponent's end step, create two Food tokens. Then you may pay 3 life. If you do, surveil 3, then draw two cards.
When Kuyen dies or is put into exile from the battlefield, you may put her into her owner's library third from the top.

Codex — Leyran Alpha; Fungal Whomper; Plated Crusher; Towering Hydraffe; The Terror of Shady Cove. (As this enters, conjure its contents into a shuffled face-up additional library.)
When Mother of Monsters enters, you gain 6 life.
When Mother of Monsters dies, draw a card.

{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.

Attacking creatures you control have first strike.
Whenever Qulai, Orchard Guardian attacks or becomes the target of a spell or ability an opponent controls, conjure a card named Fox of the Orange Orchard into your hand. (It's a {1}{W} 3/1 Fox Spirit creature.)

[+1]: Augur. (Look at the top card of your library. You may sacrifice a creature to put it into your hand. Otherwise, put it back or put it into your graveyard.)
[–X]: Exile target card in your graveyard with mana value X. Copy it. You may cast the copy without paying its mana cost.
[–6]: You get an emblem with “Whenever a creature you control dies, search your library for a creature card, reveal it, and put it into your hand, then shuffle.”