msem-instigator

As Exodus of the Khalizors enters, choose Rehison or Danuri.
• Rehison — Whenever an Elf you control enters, you may move a counter from target creature onto another target creature.
• Danuri — Soldiers you control have trample.

Exile target creature. Search its controller's graveyard and library for any number of cards with the same name as that creature and exile them. Then that player shuffles.

Madness {4}{G}{G} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
Look at the top eight cards of your library. You may reveal a creature card from among them and put it into your hand, then put the rest on the bottom of your library in a random order. Then if this spell was cast for its madness cost, you may put a creature card from your hand onto the battlefield.

{T}: Add {C}.
{1}, {T}, Exile Exotic Isle: Search target opponent's library for a land card and put it onto the battlefield tapped under your control, then that player shuffles. Activate only as a sorcery.

Exotic Vista enters tapped.
{T}: Add {G} or {U}.
When Exotic Vista enters, you may put a loyalty counter on a planeswalker you control.

Exotic Xenoreef enters tapped unless you have two or more opponents.
{T}: Add {G} or {U}.

Target player chooses a creature they control, then returns all other creatures they control to their owners' hands.

Flash
You may activate Zero's loyalty abilities any time you could cast an instant on your turn and the turn they entered.
[+2]: Destroy up to one target permanent with mana value 4 or greater.
[–2]: You may cast a spell with mana value 5 or less from your hand without paying its mana cost.
[–3]: Search your library for a card and put it into your hand. Shuffle your library.

{2}, {T}: Choose a permanent you control. Reveal the top five cards of your library. You may merge one of those cards that shares a card type with the chosen permanent under it. It has those card's abilities. Put the rest on the bottom of your library in any order.

You may play an additional land this turn.
Draw a card.

Enchant opponent
At the beginning of enchanted player's upkeep, you create a 3/2 green Crocodile creature token with trample if enchanted player has 10 or less life. Otherwise, they lose 2 life.

Each player searches their library for a basic land card, puts it onto the battlefield tapped, then shuffles.

Choose a color. Target player reveals their hand and you choose a card of that color from it. If you do, that player discards that card and you lose 1 life.

Vanishing 4 (This permanent enters with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When the last time counter is removed from Exquisite Heist, draw three cards.

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.

When Extraction Mercenary enters, if you attacked this turn, crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)
{4}{R}{R}: Extraction Mercenary deals 3 damage to any target.

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

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.

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

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

Exile the top five cards of your library. You may play one of them from exile this turn.

Up to one target creature can't block this turn. (Then exile this card. You may play the land later from exile.)

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.)

When Faceless Animist dies, you may return another target colorless card from your graveyard to your hand.

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Facsimile Sculptor desecrates a permanent, create a token that's a copy of another target creature you control, except it's an artifact (not a creature).