msem-instigator

Exile target creature. Its controller loses 3 life.

Destroy all nontoken creatures.

Faux, Who Lives for the Hunt enters as a copy of a creature card in your graveyard except it's legendary and has changeling and “When this creature dies, if it didn't have a bounty counter on it, return it to the battlefield with a bounty counter.” (It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

When Fearless King Shabil enters, reveal the top five cards of your library. You may put a Cat card from among them into your hand. Put the rest on the bottom of your library in any order.
At the beginning of combat on your turn, each Cat you control gains all abilities of each other Cat you control until end of turn.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Mill five cards. An opponent separates the milled cards into two piles. Put one pile into your hand.
5 | You may cast a nonland card from the other pile without paying its mana cost.

Reach
Once each turn, when a creature you control dies, you may draw a card.

Flying, first strike, lifelink

Destroy target creature with power 4 or greater.
Create two Idol tokens. (They're artifacts with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Each player chooses a creature with the least power among creatures they control. Then destroy the rest.

Haste
{1}{W}: Fellor Heartstriker gains lifelink until end of turn.

Trample
Whenever Fellor Razer deals combat damage to a player, that player sacrifices a land.

Haste
Battalion — Whenever Fellor Tactician and at least two other creatures attack, creatures you control get +1/+1 until end of turn.

Menace
When Fenhauler Gang enters, each player mills three cards.
Whenever Fenhauler Gang deals combat damage to a player, return up to one target creature or land card from your graveyard to your hand.

{R/G}: Fento, Nova Crusader gains haste and trample until end of turn.
Whenever Fento, Nova Crusader attacks, you may put a creature card from your hand onto the battlefield tapped and attacking. If you do, sacrifice that creature at the beginning of the next end step.

{1}{R}{G}: Feral Exemplar gets +2/+2 until end of turn. Activate only once each turn.
Ferocious — Whenever a creature you control with power 4 or greater attacks, that creature gets +X/+X until end of turn, where X is its power.

Deathtouch
Infiltrate (Whenever one or more attacking creatures you control aren't blocked, this creature gets +1/+1 until end of turn.)

At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card if it's an instant or sorcery card.

When Festering Shipwreck enters, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)
At the beginning of each player's upkeep, that player sacrifices a nonland permanent.

Enchant creature you control
When Festive Euphoria enters, you gain life and draw cards equal to enchanted creature's power.
Enchanted creature can't be blocked by creatures with power 2 or less.

Flash
Flying
{2}{B}, Exile three cards from your graveyard: Create a tapped 2/2 black Zombie creature token.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Fiery Explosion deals 5 damage to target creature or planeswalker.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Fiery Portent deals 5 damage to target creature or planeswalker.
3 | Surveil 3.

Whenever you cast a spell from your hand, exile the bottom card of your library. You may cast that card. If you don't, Fight or Fade deals 1 damage to each player.

Each player chooses a legendary permanent from among the nonland permanents they control, then sacrifices the rest.

Final Struggle deals 3 damage to target creature. When that creature dies this turn, exile it and create a 3/3 red Shark enchantment creature token.