msem-instigator

At the beginning of combat on your turn, you may have Kym, New Hope become a 4/2 Warrior creature with first strike and haste until end of turn. (They don't lose loyalty while not a planeswalker.)
[+1]: Create a red enchantment token named Blitz with “Whenever you attack, target attacking creature gets +1/+0 until end of turn.”
[–2]: Whenever you attack with one or more creatures this turn, Kym, New Hope deals that much damage to any target.

At the beginning of your upkeep, mill a card.
Whenever a creature card is put into your graveyard from your library, you may exile it. If you do, create a 2/2 black Zombie creature token.

Flash
Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{1}: Remove target attacking creature you control from combat and untap it.

Untap target creature you control. It gets +4/+4 and gains reach until end of turn.

Discard your hand. Creatures you control get +X/+0 and gain first strike until end of turn, where X is the number of cards discarded this way.

Flying
Whenever another creature dies, each opponent loses 1 life and you gain 1 life.

Choose two —
• After the first postcombat main phase this turn, there's an additional combat phase followed by an additional main phase. Creatures you control gain vigilance until end of turn.
• Creatures you control gain indestructible until end of turn.
• Creatures you control gain lifelink until end of turn.
• Creatures you control get +2/+0 until end of turn.

Flying, trample
At the beginning of your upkeep, sacrifice a creature.
Revive {2}{B}{B} ({2}{B}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Flying
When Skystream Mantas is returned to your hand from the battlefield, draw two cards.

{1}, {T}: Draw a card, then exile a card from your hand face down.
You may look at cards exiled with Ekebram's Archive.
{4}, {T}, Sacrifice Ekebram's Archive: Return all cards exiled with Ekebram's Archive to their owner's hand.

Starting with the next opponent in turn order, each player sacrifices a permanent. Repeat this process until the total mana value of all permanents sacrificed this way is 13 or greater, or until thirteen or more permanents have been sacrificed this way, or until there are no nonland permanents on the battlefield, whichever happens first. Exile Utter Pandemonium.

Menace
{1}{B}, Exile another three cards from your graveyard: Return Determined Explorer from your graveyard to your hand.

Whenever a Survivor you control dies, you draw a card and you lose 1 life.

Melting Point deals 2 damage to any target.

When Null Paradigm enters, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)
Whenever you cast a sorcery spell, each opponent loses 1 life and you gain 1 life.

Whenever Lha Maria blocks a creature, change Lha Maria's base power and toughness to that creature's power and toughness

Flying, trample
Whenever an opponent casts a noncreature spell, that player loses 5 life unless they sacrifice a creature or discard a card.

Flying
When Sweeper Drone enters, create a Function token with “Put a +1/+1 counter on each creature named Sweeper Drone you control.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Flying
Whenever a creature you control that isn't enchanted dies, adjudicate.
Whenever an enchanted creature you control dies, return it to the battlefield at the beginning of the next end step.

[+1]: Exile up to one other target permanent until the beginning of its owner's next end step.
[–1]: Return another target planeswalker to its owner's hand.
[–6]: You get an emblem with “Whenever a permanent leaves the battlefield, each opponent discards a card.”

Sacrifice another creature: Brash Hunter deals 1 damage to any target.
At the beginning of your end step, if three or more creatures died this turn, transform Brash Hunter.

Once during each of your turns, when you cast an instant or sorcery spell, you may create a Function token with that spell's effects. (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell. A spell's effects includes added functions.)

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

Counter target spell unless its controller pays {4}.

Ward {1}
Streetslipper can't be blocked.
Whenever you foretell a card or cast a foretold spell, put a +1/+1 counter on Streetslipper.