msem-instigator

{T}: Draw a card, then discard a card.
Whenever you cast an instant or sorcery spell, untap Exchange Scholar.

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Exemplar of Disdain desecrates a permanent, target creature you don't control gets -3/-3 until end of turn.

Vigilance
{G}, {T}: Exile up to three target cards from graveyards. If two or more of those cards share a card type, create a 1/1 colorless Servo artifact creature token.

{1}, {T}, Exile a land card from your graveyard: Add two mana in any combination of colors.
{B}{G}, {T}, Discard a card: Nourish 2. (To nourish 2, either put two +1/+1 counters on this creature or create two 1/1 white Citizen creature tokens.)

Flash
When Expedition Duo enters, if you cast an Adventure spell or a permanent you controlled explored this turn, draw a card.

Cycling {3} ({3}, Discard this card: Draw a card.)

Explosion Fanatic can't attack unless an opponent was dealt damage this turn.

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.

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

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

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

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

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.)

Whenever a creature blocks or becomes blocked by Faceless Virtue, that creature loses all abilities until end of combat.

When Fae-Blessed Attendant enters, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
Whenever you sacrifice a Clue, untap target permanent.

Fahrib's Tongue can't be blocked by creatures with two or more creature types.
Whenever Fahrib's Tongue deals combat damage to a player, that player loses 1 life for each creature that dealt damage to them this turn.

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
You may play cards exiled with Fahrib and you may spend mana as though it were mana of any color to play them.
{U}{B}: Demon — Each player exiles a card from their hand.
{4}{U}{B}: Elder — Exile the top five cards of each player's library. Fahrib gains “Spells you cast from anywhere other than your hand cost {2} less to cast.”

Whenever Failed Martyr attacks, each other attacking creature gets +1/+0 until end of turn.
Attain {4}{W} ({4}{W}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

When Faithless Deserter enters, you may sacrifice a creature. If you do, each opponent sacrifices a creature.

Flying
Whenever Fakadeh, Florid Queen attacks, you may exile an instant or sorcery card from your graveyard with mana value 3 or less.
Whenever Fakadeh deals combat damage to a player, cast any number of cards exiled with her without paying their mana costs.

Reach
When Falkenrath Fletcher enters, if an opponent lost life this turn, create a 1/1 black and red Vampire creature token with menace.

Menace, lifelink
When Fallen Hero leaves your graveyard, if it wasn't exiled, you may return target creature card not named Fallen Hero from your graveyard to your hand.

When Fang Den Headhunter enters, look at the top card of your library. If it's a creature card, you may reveal it and draw a card.

Flash
Flying
When Fang Luo enters, exile target spell or creature an opponent controls with mana value 4 or less, then its owner puts it onto the battlefield face down. (It's a 2/2 creature.)