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.

+2: Create a 1/1 green Elf Druid creature token with ": Add ."

−2: Destroy target artifact or enchantment.

−6: Draw a card for each green creature you control.

Freyalise, Llanowar's Fury can be your commander.

Whenever an opponent casts a black spell, you may pay . If you do, you draw a card.

: Return Freyalise's Charm to its owner's hand.

Whenever a permanent becomes tapped, put a wind counter on it.

If a permanent with a wind counter on it would untap during its controller's untap step, remove all wind counters from it instead.

Target creature's controller reveals a card at random from their hand. Friendly Fire deals damage to that creature and that player equal to the revealed card's mana value.

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.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Threshold — As long as seven or more cards are in your graveyard, Frightcrawler gets +2/+2 and can't block.

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.)

Enrage — Whenever Frilled Deathspitter is dealt damage, it deals 2 damage to target opponent or planeswalker.

: Frilled Oculus gets +2/+2 until end of turn. Activate only once each turn.

: Frilled Sea Serpent can't be blocked this turn.

When Frillscare Mentor enters, 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.

Partner with Sam, Loyal Attendant

Vigilance

Whenever Frodo, Adventurous Hobbit attacks, if you gained 3 or more life this turn, the Ring tempts you. Then if Frodo is your Ring-bearer and the Ring has tempted you two or more times this game, draw a card.

: If Frodo, Sauron's Bane is a Citizen, it becomes a Halfling Scout with base power and toughness 2/3 and lifelink.

: If Frodo is a Scout, it becomes a Halfling Rogue with "Whenever this creature deals combat damage to a player, that player loses the game if the Ring has tempted you four or more times this game. Otherwise, the Ring tempts you."

Trample, haste

Whenever Froghemoth deals combat damage to a player, exile up to that many target cards from their graveyard. Put a +1/+1 counter on Froghemoth for each creature card exiled this way. You gain 1 life for each noncreature card exiled this way.

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.)

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

2/2

Flying

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

Destroy all nonbasic lands. For each land destroyed this way, its controller may search their library for a basic land card and put it onto the battlefield. Then each player who searched their library this way shuffles.

As From the Rubble enters, choose a creature type.

At the beginning of your end step, return target creature card of the chosen type from your graveyard to the battlefield with a finality counter on it. (If a creature with a finality counter on it would die, exile it instead.)

Vigilance

Creatures you control with vigilance have ", : Tap target creature."

, : Until end of turn, you may play one basic Plains card from outside the game.

Ferocious — Frontier Mastodon enters with a +1/+1 counter on it if you control a creature with power 4 or greater.

As Frontier Siege enters, choose Khans or Dragons.

• Khans — At the beginning of each of your main phases, add .

• Dragons — Whenever a creature with flying enters under your control, you may have it fight target creature you don't control.

Afflict 2 (Whenever this creature becomes blocked, defending player loses 2 life.)

: Frontline Devastator gets +1/+0 until end of turn.

Frontline Rebel attacks each combat if able.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Frontline Strategist is turned face up, prevent all combat damage non-Soldier creatures would deal this turn.

Frost Bite deals 2 damage to target creature or planeswalker. If you control three or more snow permanents, it deals 3 damage instead.

When Frost Fair Lure Fish enters, 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

When Frost Lynx enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Whenever Frost Titan becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .

Whenever Frost Titan enters or attacks, tap target permanent. It doesn't untap during its controller's next untap step.

When Frost Walker becomes the target of a spell or ability, sacrifice it.

, : Tap target creature.

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

When Frostfist Strider enters, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

: Frostpeak Yeti can't be blocked this turn. ( can be paid with one mana from a snow source.)

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

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

: Frostwalla gets +2/+2 until end of turn. Activate only once each turn. ( can be paid with one mana from a snow source.)

If a creature dealt damage by Frostwielder this turn would die, exile it instead.

: Frostwielder deals 1 damage to any target.

Artifacts, creatures, and lands your opponents control enter tapped.

Enchant creature

Enchanted creature doesn't untap during its controller's untap step.

When enchanted creature is dealt damage, destroy it.

Target player loses 2 life.

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

This spell can't be countered.

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

Prowess, haste

Disguise . This cost is reduced by for each instant and sorcery card in your graveyard. (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

When Fugitive Codebreaker is turned face up, discard your hand, then draw three cards.

Populate X times. (To populate, create a token that's a copy of a creature token you control. Do this X times.)

Target creature gets +3/+3 until end of turn. Put a trample counter on it.

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

Destroy target creature and target land.