msem-instigator

As an additional cost to cast this spell, sacrifice a permanent.
Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Target player mills two cards. You draw a card and you lose 1 life.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

Create two 1/1 Insect creature tokens that are all colors.
Create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

Enchant artifact
Enchanted artifact is an Equipment and has “Equipped creature gets +2/+0” and equip {0}.

Finish Off deals 2 damage to any target. If you've drawn two or more cards this turn, it deals 3 damage instead.
Cycling {3} ({3}, Discard this card: Draw a card.)

Finish the Job deals 5 damage to target creature that was dealt damage this turn. If that creature would die this turn, exile it instead.

Rouse 1. Finishing Blow deals X damage to any target, where X is the greatest power among creatures you control. (Put a +1/+1 counter on a permanent you control. If it isn't a creature, tap it and it becomes a 0/0 creature in addition to its other types.)

Destroy target creature if it was dealt damage this turn.

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Fire and Ashes deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Fire from Above deals 2 damage to target opponent and each creature with flying that player controls.

{R}, Sacrifice Firebelly Toad: It deals 3 damage to target player or planeswalker.

Exile the top three cards of your library. Until the end of your next turn, you may play those cards.

This spell can't be countered.
Firebloom deals 3 damage to target creature or planeswalker.

Firebolt deals 2 damage to any target.
Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Choose target creature you control, then choose two —
• Put a +1/+1 counter on it.
• Put a first strike counter on it.
• Put a trample counter on it.

Whenever Firefall Praetorians attacks, exile the top card of your library then copy it. You may play the copy and/or the exiled card.

Create three 1/1 red Elemental creature tokens.

At the beginning of each combat, you may have Firefish Conjurer deal 3 damage to target creature you control. If you do, Firefish Conjurer gets +2/+0 and gains flying until end of turn.

Whenever Fireheart Centaur attacks, you may pay {2}{R}. If you do, it gets +1/+0 until end of turn for each Centaur you control.

First strike, haste
Other creatures you control with flash or haste have first strike.

Fires of Renewal deals 2 damage to each creature.
Create a Treasure token.

If an opponent controls three or more attacking creatures, you may cast this spell as though it had flash.
Firewall Trap deals 5 damage to target creature. When that creature dies this turn, Firewall Trap deals damage equal to that creature's power to another target creature.

Secretly choose a creature card name. Target opponent chooses a creature you don't control. Firing Blind deals 5 damage to that creature. Reveal the chosen name, then if that creature has the chosen name, Firing Blind deals 3 damage to that opponent.

Destroy target creature. You may remove a counter from up to one target permanent.