msem-instigator

Land creatures you control get +1/+1 and have vigilance.
Enchantment creatures you control get +1/+1 and have lifelink.
Artifact creatures you control get +1/+1 and have flying.

Create a 1/1 colorless Human creature token. Put your choice of a flying, vigilance, prowess, or hexproof counter on it. If you control a permanent with mana value 5 or greater, instead put any number of those counters and a +1/+1 counter on it.

({T}: Add {R}.)
Spire Sanctuary enters tapped with two sanctum counters on it.
{T}, Remove a sanctum counter from Spire Sanctuary: Add {B} or {G}.

Choose one —
• Target creature gets +4/+0 until end of turn.
• Sandstorm Charm deals 1 damage to target creature. It can't block this turn.
• Scry 1, then draw a card.

Choose target creature, then flip a coin. If you win the flip, Long Shot deals 5 damage to that creature. Otherwise, return Long Shot to its owner's hand.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Harpoon Launching deals 3 damage to any target. Create a 1/1 red Goblin creature token.

Once each turn, when another creature dies, you may crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)
Whenever an artifact you control dies, Nihilistic Shock Trooper deals 1 damage to each opponent.

{1}, Sacrifice a creature: Create a Treasure token. Exile the top card of your library. You may play that card this turn.

Once during each of your turns, you may cast an instant, sorcery, or enchantment spell from your graveyard that targets a creature you control.

Return any number of target creature cards with total mana value X or less from your graveyard to the battlefield, where X is the number of cards in your graveyard. Exile Battle at the Boneyard.

{T}: Add {C}.
{3}, {T}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Choose two —
• Return up to two target nonland permanents to their owner's hands.
• Any number of target players each sacrifice a creature.
• Any number of target players each sacrifice a planeswalker.
• Any number of target players each sacrifice an artifact or enchantment.

When Etched Longspear enters, attach it to target creature you control.
Equipped creature gets +2/+0.
Equip {3}

Poisonous 3 (Whenever this creature deals combat damage to a player, that player gets three poison counters.)
When Sankataar Assailant enters, choose a counter on target permanent or player. Give that permanent or player another counter of that kind.

Flash
Flying
When Gale Conjurant enters, return target spell to its owner's hand if its mana value is less than or equal to the number of creatures in Gale Conjurant's pack. (Two or more creatures you control with equal power are in a pack.)

Destroy target land. Its controller creates a colorless Desert land token with “{T}: Add {C}.”

Menace
When Lone Zombie and at least two other creatures attack, transform Lone Zombie.

This spell costs {2} less to cast if a creature died under your control this turn.
Flying

Whenever The Ever-Pestilent deals combat damage to a player, that player discards a card at random.

Look at the top two cards of your library. Put one of them into your hand, then submerge the other. (To submerge a card, exile it, then put it on the battlefield face down under its owner's control as a 2/2 creature.)

[+1]: Remove up to one loyalty counter from each other planeswalker. Up to one target player loses 1 life for each counter removed this way.
[–1]: For each other player and permanent, remove a counter from it or give it another counter of a kind that permanent or player already has.
[–4]: Put target nonland permanent on the bottom of its owner's library.

As Animus, Life's Entropy enters, choose a color.
You and Animus each have hexproof from the chosen color.
Attain {6} ({6}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

As an additional cost to cast this spell, discard a card.
Create three 1/1 black Spirit creature tokens with flying.

Destroy target creature with power 3 or greater.