msem-instigator

Flamingo Rock enters tapped unless you played it from exile.
{T}: Add {U} or {R}.

When Flare Blitz enters, it deals 3 damage to any target and you gain 3 life.
{1}{R}{W}: Return Flare Blitz to its owner's hand.

Bleed {1}{U}{U} (You may cast this spell for its bleed cost if an opponent has lost life this turn.)
Look at the top seven cards of your library. Put two of those cards into your hand and the rest on the bottom of your library in any order.

For each Equipment you control, you may attach it to target creature you control.
Draw a card.

Instant and sorcery spells you cast cost {1} less to cast.

Choose target artifact, creature or planeswalker. If this spell was foretold, you may destroy it. Create a token that's a copy of it except it isn't legendary, has haste and “At the beginning of the end step, sacrifice this permanent.”
Foretell {B}{B}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

You may have Flawless Counterfeit enter as a copy of any noncreature artifact on the battlefield.

At the beginning of your upkeep, gain control of up to one target noncreature, nonland permanent for as long as you control Flawless Heist. Then if you control five or more permanents you don't own, you win the game.

Exile the top two cards of your library. You may play one of them until the end of your next turn.
Motley — If there are five or more names among nonland permanents you control, you may play both of them until the end of your next turn instead.

Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
Once each turn, when a Curse you control becomes attached to an opponent, you may sacrifice it. If you do, reveal cards from the top of your library until you reveal a Curse card. Put that card onto the battlefield attached to that player, and the rest on the bottom of your library in a random order.

You may have Fleeting Memory enter as a copy of any creature on the battlefield, except it has “At the beginning of the end step, exile this creature.”

Vanishing 2 (This permanent enters with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever a player discards one or more cards, put a time counter on Fleeting Moments.
Whenever a time counter is removed from Fleeting Moments, you draw a card and you lose 1 life.

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Menace
Whenever an opponent activates an ability that isn't a mana ability, Flensing Tormentor deals 1 damage to that player.

Vanishing 1 (This permanent enters with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Flesh to Rot enters or the last time counter is removed from it, all creatures get -3/-3 until end of turn.

{1}{B}, Discard a creature card: Draw a card.
{1}{B}, {T}, Exile a creature card from your graveyard: Create a tapped 2/2 black Zombie creature token.

Flying (This creature can't be blocked except by creatures with flying or reach.)
At the beginning of your upkeep, put a +1/+1 counter on Fleshrender Demon and you lose 1 life.

If an opponent would draw one or more cards except for the first one they draw in each of their draw steps, instead they draw those cards, then may pay {1}. If they don't pay, they get a poison counter and you draw a card

Fleshweaver's Domain enters tapped.
{T}: Add {G}.

When Fletcher Kalku enters or attacks, you may exile a card from your hand face down. If you do, draw a card.
You may look at cards exiled with Fletcher Kalku.
{U}{U}, Reveal a card exiled with Fletcher Kalku: Counter target spell if it has the same mana value as the revealed card. Then put the exiled card into its owner's hand.

Create X 4/4 white Angel creature tokens with flying.
Flashback {X}{W}{W}{W}{W}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
You don't lose unspent red mana as steps and phases end.
I, II — Add {R}{R}.
III — Create a 3/3 red Phoenix creature token with flying, haste, and “{R}: This creature gets +1/+0 until end of turn.”

First strike
Whenever Flintlock Pioneer deals damage, tap it. It doesn't untap during its controller's next untap step.

Return all creatures with toughness 3 or less to their owners' hands.
Investigate three times. (To investigate, create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

({T}: Add {U} or {B}.)
Flooded Morass enters tapped unless you control a basic Island or a basic Swamp.