Whenever Fleet Swallower attacks, target player mills half their library, rounded up.

Equipped creature has flying and haste.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flash

When Fleetfoot Panther enters, return a green or white creature you control to its owner's hand.

Flying

Whenever a player cycles a card, return Fleeting Aven to its owner's hand.

Put a +1/+1 counter on target creature. It gains flying until end of turn. Prevent all combat damage that would be dealt to it this turn.

When Fleeting Memories enters, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever you sacrifice a Clue, target player mills three cards.

, Exile three cards from your graveyard: Fleeting Spirit gains first strike until end of turn.

Discard a card: Exile Fleeting Spirit. Return it to the battlefield under its owner's control at the beginning of the next end step.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

You may have Flesh Duplicate enter as a copy of any creature on the battlefield, except it has vanishing 3 if that creature doesn't have vanishing. (A permanent with vanishing 3 enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Sacrifice a creature: Flesh-Eater Imp gets +1/+1 until end of turn.

Corrupted — : Return Fleshless Gladiator from your graveyard to the battlefield tapped. You lose 1 life. Activate only if an opponent has three or more poison counters.

When Fleshpulper Giant enters, you may destroy target creature with toughness 2 or less.

Transfigure (, Sacrifice this creature: Search your library for a creature card with the same mana value as this creature, put that card onto the battlefield, then shuffle. Transfigure only as a sorcery.)

Flying

: Exile Flickering Spirit, then return it to the battlefield under its owner's control.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Flying

, Sacrifice Flight Spellbomb: Target creature gains flying until end of turn.

When Flight Spellbomb is put into a graveyard from the battlefield, you may pay . If you do, draw a card.

Flinthoof Boar gets +1/+1 as long as you control a Mountain.

: Flinthoof Boar gains haste until end of turn. (It can attack and this turn.)

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Flitterstep Eidolon can't be blocked.

Enchanted creature gets +1/+1 and can't be blocked.

Enchant creature

As Floating Shield enters, choose a color.

Enchanted creature has protection from the chosen color. This effect doesn't remove Floating Shield.

Sacrifice Floating Shield: Target creature gains protection from the chosen color until end of turn.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Flying, vigilance

Whenever Flockchaser Phantom attacks, the next spell you cast this turn has convoke.

Return all nonland permanents to their owners' hands. If you return four or more nontoken permanents you control this way, you may put a permanent card from your hand onto the battlefield.

Defender

When Floodgate has flying, sacrifice it.

When Floodgate leaves the battlefield, it deals damage to each nonblue creature without flying equal to half the number of Islands you control, rounded down.

Floodtide Serpent can't attack unless you return an enchantment you control to its owner's hand. (This cost is paid as attackers are declared.)

Return up to two target creatures to their owners' hands.

Cycling (, Discard this card: Draw a card.)

When Flourishing Hunter enters, you gain life equal to the greatest toughness among other creatures you control.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Flow of Maggots can't be blocked by non-Wall creatures.

Flowering Lumberknot can't attack or block unless it's paired with a creature with soulbond.

You may choose not to untap Flowstone Armor during your untap step.

, : Target creature gets +1/-1 for as long as Flowstone Armor remains tapped.

, , Discard a card: Target creature gets +1/-1 and gains haste until end of turn.

: Flowstone Crusher gets +1/-1 until end of turn.

Buyback—Pay 3 life, Discard a card at random. (You may pay 3 life and discard a card at random in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)

Destroy target land.

Haste

: Flowstone Hellion gets +1/-1 until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)

: Flowstone Kavu gets +1/-1 until end of turn.

: Target creature gets +1/-1 until end of turn.

, Discard a card: Put a +1/+1 counter on Flowstone Sculpture or Flowstone Sculpture gains flying, first strike, or trample. <I>(This effect lasts indefinitely.)</I>

All creatures get +X/-X until end of turn.

Creatures you control get +1/-1.

Defender (This creature can't attack.)

: Flowstone Wall gets +1/-1 until end of turn.

You may play an additional land on each of your turns.

Whenever you play a land or cast a spell, draw a card if you have no cards in hand. Otherwise, discard a card.

Whenever Fludge, Gunk Guardian or another Slug, Ooze, Fungus, or Mutant enters the battlefield under your control, each opponent shuffles three Gunk cards into their library. (Gunk is a colorless sorcery card with no mana cost that has cycling .)

As long as you control an artifact or enchantment, Flutterfox has flying.

, : Target creature gains flying until end of turn.

Flash

As Focused Funambulist enters, you may put an art sticker on the empty side of the balancing pole. When you do, ask a person outside the game "Does this look balanced?" If they say yes, you may tap or untap target creature.

Flying

When Foe-Razer Regent enters, you may have it fight target creature you don't control.

Whenever a creature you control fights, put two +1/+1 counters on it at the beginning of the next end step.

Flying

: Regenerate Fog of Gnats.

Cast this spell only during the declare blockers step.

Attacking creatures become blocked. (This spell works on creatures that can't be blocked.)

: Folk of the Pines gets +1/+0 until end of turn.

Conjure a card of your choice from Follow the Tracks's spellbook onto the battlefield.

: Add .

, , Discard a card: Look at the top X cards of your library, where X is the number of artifacts you control. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

, Sacrifice Font of Fertility: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.