msem-instigator

Flying, lifelink

At the beginning of your upkeep, put a brush counter on Life's Work, exile cards from the top of your library until you exile a card with mana value greater than or equal to the number of brush counters on Life's Work, then put that card into your hand.

Create a token that's a copy of target creature, except it has haste and “At the beginning of the end step, sacrifice this permanent.”
Flashback {1}{G}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchant creature
Enchanted creature gets +2/+1 and has menace.

Armies you control attack each combat if able.
At the beginning of combat on your turn, recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Look at the top two cards of your library. Put one of them into your hand, then you may have any number of players each mill three cards.

When Lightblessed Claymore enters, attach it to target creature you control.
Equipped creature gets +2/+0 and has lifelink.
Equip {4}

Lifelink
Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)

When Consumption Catalyst enters, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)
Whenever you draw a card, each opponent loses 1 life and you gain 1 life.

Voracious 1 (As this enters, you may sacrifice an artifact or creature. If you do, it enters with a +1/+1 counter on it.)
Haste

As long as a creature you control has flying, creatures you control have flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Art of war — At the beginning of your end step, if Kurayami Butcher dealt damage to an opponent, you may destroy target creature that was dealt damage this turn.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
When Soul Trapper enters, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Soul Trapper.

Reach
{T}: Yangzhi Cloudpiercer deals 1 damage to target player or planeswalker.

Target creature you control deals damage equal to its power to target creature or planeswalker you don't control. Scry 1.

Flying
When Depraved Imp enters, if you control a legendary creature, put two +1/+1 counters on Depraved Imp.

Foretell {3}{G} (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.)
This spell's foretell cost costs {3} less to pay if an opponent drew two or more cards this turn.
Create a 5/5 green Beast creature token with trample.

Populate, then you gain 2 life. (Create a token that's a copy of a creature token you control.)

{1}{B}, {T}, Remove a time counter from a permanent you control: Fretport Anarchists deals 2 damage to any target. You gain 2 life.

{T}: Add {C}.
{5}, {T}, Sacrifice The Aetherite Saloon: Each player discards their hand and draws seven cards.

First strike

When Genome Mapper enters, create a Function token with “Create an X/X green Mutant creature token, where X is this spell's mana value.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

As long as you've gained life this turn, Bloodied Outcast gets +1/+0 and has lifelink.
As long as an opponent has lost life this turn, Bloodied Outcast gets +0/+1 and has deathtouch.