Each player loses half their life, then discards half the cards in their hand, then sacrifices half the creatures they control. Round up each time.

Counter target nonblue spell.

Target creature gets +2/+2 until end of turn. Put two oil counters on it.

Enchant creature

: Tap enchanted creature.

: Untap enchanted creature.

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.

: Roll two six-sided dice. If both results are the same, Free-Range Chicken gets +X/+X until end of turn, where X is that result. If the total of those results is equal to any other total you have rolled this turn for this ability, sacrifice it. (For example, if you roll two 3s, it gets +3/+3. If you roll a 4 and a 2 for this ability later that turn, sacrifice it.)

Reach

Whenever you commit a crime, look at the top five cards of your library. You may put a land card from among them onto the battlefield tapped. Put the rest on the bottom of your library in a random order. This ability triggers only once each turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

Flying, protection from red

Protection from enemy-colored multicolored. (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything that's two enemy colors, such as blue and green.)

, 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.

, Sacrifice Frenzied Trapbreaker: Destroy target artifact or enchantment.

Whenever Frenzied Trapbreaker attacks, destroy target artifact or enchantment defending player controls.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Create a 3/3 green Beast creature token for each creature put into your graveyard from the battlefield this turn.

As long as it's your turn, Fresh-Faced Recruit has first strike.

, Sacrifice a red or white creature: Freyalise Supplicant deals damage to any target equal to half the sacrificed creature's power, rounded down.

+1: Untap up to one target Elf. That Elf and a random Elf creature card in your hand perpetually get +1/+1.

−1: Seek an Elf card.

−6: Conjure a card named Regal Force onto the battlefield.

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.)

Snow permanents don't untap during their controllers' untap steps.

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.

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.

Whenever Frodo Baggins or another legendary creature enters the battlefield under your control, the Ring tempts you.

As long as Frodo is your Ring-bearer, it must be blocked if able.

Whenever Frodo, Determined Hero enters the battlefield or attacks, you may attach target Equipment you control with mana value 2 or 3 to Frodo.

As long as it's your turn, prevent all damage that would be dealt to Frodo.

Enchant creature

When Frog Tongue enters the battlefield, draw a card.

Enchanted creature has reach. (It can block creatures with flying.)

Enchant creature

Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1. (It loses all other card types and creature types.)

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

Haste

Goblin spells and Rogue spells you cast cost less to cast.

Devoid (This card has no color.)

At the beginning of your upkeep, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."

, Sacrifice From Beyond: Search your library for an Eldrazi card, reveal it, put it into your hand, then shuffle.

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.)

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Create three tapped 2/2 black Zombie creature tokens and you gain 3 life. If this spell's madness cost was paid, instead create X of those tokens and you gain X life.

Frontier Bivouac enters the battlefield tapped.

: Add , , or .

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

When Frontier Seeker enters the battlefield, look at the top five cards of your library. You may reveal a Mount creature card or a Plains card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

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

Battalion — Whenever Frontline Medic and at least two other creatures attack, creatures you control gain indestructible until end of turn.

Sacrifice Frontline Medic: Counter target spell with in its mana cost unless its controller pays .

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

, : Draw a card, then discard a card.

, : Look at the top card of your library. If it's a snow card, you may reveal it and put it into your hand. ( 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.

Rampage 2 <I>(Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)</I>

Frost Marsh enters the battlefield tapped.

: Add or .

Flying

: Frost Raptor gains shroud until end of turn. ( can be paid with one mana from a snow source. A creature with shroud can't be the target of spells or abilities.)

Flying

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

As Frostboil Snarl enters the battlefield, you may reveal an Island or Mountain card from your hand. If you don't, Frostboil Snarl enters the battlefield tapped.

: Add or .