As an additional cost to cast this spell, sacrifice a permanent.

Foundry Helix deals 4 damage to any target. If the sacrificed permanent was an artifact, you gain 4 life.

Flying

Foundry Screecher gets +1/+0 as long as you control an artifact.

When Fourth Bridge Prowler enters the battlefield, you may have target creature get -1/-1 until end of turn.

Enchant creature

Whenever enchanted creature becomes the target of a spell or ability, that spell or ability's controller gains control of that creature. (This effect lasts indefinitely.)

As Frankenstein's Monster enters the battlefield, exile X creature cards from your graveyard. If you can't, put Frankenstein's Monster into its owner's graveyard instead of onto the battlefield. For each creature card exiled this way, Frankenstein's Monster enters the battlefield with a +2/+0, +1/+1, or +0/+2 counter on it.

Haste

When Frantic Scapegoat enters the battlefield, suspect it. (It has menace and can't block.)

Whenever one or more other creatures enter the battlefield under your control, if Frantic Scapegoat is suspected, you may suspect one of the other creatures. If you do, Frantic Scapegoat is no longer suspected.

Protection from wordy (Something is wordy if it has four or more lines of rules text.)

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)

Flying

: Freejam Regent gets +2/+0 until end of turn.

, Discard a card at random: Frenetic Ogre gets +3/+0 until end of turn.

All Slivers have ": If this permanent is on the battlefield, flip a coin. If you win the flip, exile this permanent and return it to the battlefield under its owner's control at the beginning of the next end step. If you lose the flip, sacrifice it."

Haste

Whenever you cast a noncreature spell, Frenzied Devils gets +2/+2 until end of turn.

Prowess

When Frenzied Geistblaster enters the battlefield, if there are twenty or more instant and/or sorcery cards among cards in your graveyard, hand, and library, you may discard a card. If you do, seek an instant or sorcery card.

When Frenzied Gorespawn enters the battlefield, for each opponent, goad target creature that player controls. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)

Whenever one or more creatures attack one of your opponents, those creatures gain menace until end of turn.

Whenever you activate a boast ability, put a +1/+1 counter on Frenzied Raider.

Haste

All creatures can attack your opponents and planeswalkers your opponents control as though those creatures had haste.

All Sliver creatures have frenzy 1. (Whenever a Sliver attacks and isn't blocked, it gets +1/+0 until end of turn.)

Fretwork Colony can't block.

At the beginning of your upkeep, put a +1/+1 counter on Fretwork Colony and you lose 1 life.

Target creature you control and up to one other target legendary creature you control each deal damage equal to their power to target creature you don't control.

You may choose not to untap Frightshroud Courier during your untap step.

, : Target Zombie creature gets +2/+2 and has fear for as long as Frightshroud Courier remains tapped. (It can't be blocked except by artifact creatures and/or black creatures.)

When Frillscare Mentor enters the battlefield, put a menace counter on target non-Human creature you control. (It can't be blocked except by two or more creatures.)

, : Put a +1/+1 counter on each creature you control with menace.

When CARDNAME enters the battlefield, target opponent reveals their hand. Choose a nonland card from it. Ransom that card. (Exile it. Its owner may pay at any time to return it to their hand.)

Flying

Whenever you cast an instant or sorcery spell, Frolicking Familiar gets +1/+1 until end of turn.

Put target creature card from a graveyard onto the battlefield under your control with a corpse counter on it. You take the initiative. If that creature would leave the battlefield, exile it instead of putting it anywhere else.

Escape—, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Whenever one or more creatures attack one of your opponents or a planeswalker they control, those creatures gain menace until end of turn.

Frontline Rebel attacks each combat if able.

When Frost Fair Lure Fish enters the battlefield, create two 1/1 blue Fish creature tokens and create two tapped Treasure tokens.

Fish you control have haste and can't be blocked by Humans.

Foretell

Sacrifice Frostling: It deals 1 damage to target creature.

: Frozen Shade gets +1/+1 until end of turn.

This spell can't be countered.

Fry deals 5 damage to target creature or planeswalker that's white or blue.

Target player discards three cards.

As an additional cost to cast this spell, pay 3 life.

Destroy target creature and target land.

Fumiko the Lowblood has bushido X, where X is the number of attacking creatures. (Whenever this creature blocks or becomes blocked, it gets +X/+X until end of turn.)

Creatures your opponents control attack each combat if able.

Choose one —

• Target player discards a card.

• Target creature gets +2/-1 until end of turn.

• Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)

You draw two cards, lose 2 life, then mill two cards.

Target creature gets -1/-1 until end of turn. Create a 1/1 green Saproling creature token.

Furious deals 3 damage to each creature without flying.

Target creature gets +3/+0 and gains first strike until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Target blocking creature gets +3/+0 and gains first strike until end of turn.

Trample

At the beginning of your end step, put a +1/+1 counter on Furious Spinesplitter for each opponent that was dealt damage this turn.

Whenever you sacrifice another permanent, you may pay . If you do, Furnace Celebration deals 2 damage to any target.

: Furnace Gremlin gets +1/+0 until end of turn.

When Furnace Gremlin dies, incubate X, where X is its power. (Create an Incubator token with X +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat damage to a player or battle, create a Treasure token." (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Haste

: Furnace Spirit gets +1/+0 until end of turn.

Flying

: Furnace Whelp gets +1/+0 until end of turn.

Enchant creature

Enchanted creature gets +2/+2 and attacks each combat if able.

Choose one —

• Destroy target artifact.

• Target creature gets +1/+1 and gains trample until end of turn.

• Remove two time counters from target permanent or suspended card.

All Sliver creatures have double strike.

Trample

At the beginning of combat on your turn, you may discard a card. If you do, Furyblade Vampire gets +3/+0 until end of turn.