msem-instigator

Exile target creature.
Draw a card.

When Exquisite Artisan enters, judge target noncreature artifact you control. If you honor it, it becomes a 0/0 Construct artifact creature with flying. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

As Extinction Specialist enters, note two creature types.
Whenever Extinction Specialist enters or attacks, choose one of the noted creature types. Creatures you don't control of the chosen type get -1/-1 until end of turn.

Reach
When Extolled Arachstruct enters, mill two cards. When you do, choose one —
• Each opponent sacrifices a creature with power less than the number of cards in your graveyard.
• Each opponent sacrifices a creature with power greater than the number of cards in your graveyard.

You may exert Extoller of Effort as it attacks. (An exerted creature won't untap during your next untap step.)
Whenever you exert a creature, create a 1/1 white Human creature token.

When Extracurricular Studies enters, search target opponent's library for a card and exile it. Then that player shuffles.
You may play cards exiled by Extracurricular Studies and you may spend mana as though it was mana of any type to cast them. When you do, return Extracurricular Studies to its owner's hand.

Gain control of target nonland permanent until end of turn. Untap it. It gains haste until end of turn.

Choose one or both —
• Counter target spell.
• Exile target permanent you control, then return it to the battlefield under your control.

Stampede — Whenever Exuberant Hunter and a creature with greater power attack, draw a card.

Eureka! (At the beginning of each end step, you get a research counter if you cast a spell this turn. Then if you have eight or more research counters, remove them and create a Masterpiece token of your choice.)
At the beginning of your first end step each turn, you get an additional end step after this step.

{2}, {T}: Tap target creature. This ability costs {2} less to activate if you control an enchantment.

Reach, trample
Revive {4}{G} ({4}{G}, 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.)

Your opponents play with their hands revealed.
At the beginning of your end step, choose a card name.
You and spells you control can't be targeted by sources your opponents control with a name chosen by Eye of Dismay.
Eye of Dismay has protection from names chosen by it.

Exile target spell or nonland permanent. That card's owner casts it without paying its mana cost at the beginning of the next turn's upkeep.

Vigilance
Players can't untap more than two lands during their untap steps.

When Eyes in Orbit enters, you may exile another target permanent you control. Return that card to the battlefield under your control at the beginning of the next end step.

At the beginning of your upkeep, each player loses 3 life unless they sacrifice a creature.
Sacrifice a creature: Fateseal 1. (Look at the top one cards of an opponent's library, then put any number on the bottom and the rest on top in any order.)

When Eyes of the Maghbri enters, if you control a creature token, create a 2/2 black Hound creature token.

Trample
Noncreature spells cost an additional “Put a noncreature permanent you both own and control on top of your library” to cast.

When Fabled Chishou enters, create a token that's a copy of it, except it doesn't have this ability.
At the beginning of each end step, if Fabled Chishou isn't in a pack, sacrifice it. (Two or more creatures you control with equal power are in a pack.)

Unveil {3}{G}{W} ({3}{G}{W}: Transform this. Unveil only as a sorcery.)

(Choose only one work as a sorcery to add its ability.)
When Fables of the Ill-Fated enters, destroy target nonland permanent.
{B}: The Witch's Temple
Whenever a nonland permanent you control dies, each opponent loses 1 life.
{3}{G}: Enter the Nest
{3}{G}, Sacrifice two lands: Create a 0/0 green Wurm creature token with “This creature gets +1/+1 for each permanent card in your graveyard.” Activate only as a sorcery.

Discard your hand, then draw three cards. If you spent at least {W}{U}{B}{R}{G} to cast this spell, you may cast any number of cards drawn this way without paying their mana costs.
Exile Face Your Demons.

Gestalt (When this or another creature enters under your control, you may merge it with the one in play, keeping counters and attachments. They become the permanent on top plus all abilities from under it.)
Vigilance, lifelink
Whenever an opponent casts a spell, this permanent phases out until end of turn. (Treat it and anything attached to it as though they don't exist until end of turn.)