Destroy all Plains.

Whenever Flaxen Intruder deals combat damage to a player, you may sacrifice it. When you do, destroy target artifact or enchantment.

Whenever Flayed Nim deals combat damage to a creature, that creature's controller loses that much life.

: Regenerate Flayed Nim.

Devoid (This card has no color.)

First strike

Whenever another colorless creature you control enters, target opponent loses 1 life.

Flying

Threshold — As long as seven or more cards are in your graveyard, Fledgling Dragon gets +3/+3 and has ": Fledgling Dragon gets +1/+0 until end of turn."

Flash (You may cast this spell any time you could cast an instant.)

Flying, deathtouch

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

Flying

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

Target creature you control gains hexproof until end of turn. Untap that creature. Until end of turn, it becomes a copy of up to one other target creature.

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

Destroy target creature. Its controller loses life equal to the number of creatures that died this turn.

When Fleshbag Marauder enters, each player sacrifices a creature.

: Fleshformer gets +2/+2 and gains fear until end of turn. Target creature gets -2/-2 until end of turn. Activate only during your turn. (A creature with fear can't be blocked except by artifact creatures and/or black creatures.)

Whenever you sacrifice another creature, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom.)

, Sacrifice another creature: Fleshtaker gets +2/+2 until end of turn.

Enchant creature

As Flickering Ward enters, choose a color.

Enchanted creature has protection from the chosen color. This effect doesn't remove Flickering Ward.

: Return Flickering Ward to its owner's hand.

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

Whenever Flint Golem becomes blocked, defending player mills three cards.

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.

: Tap target creature without flying.

Flood Plain enters tapped.

, Sacrifice Flood Plain: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

Flash

Vigilance

When Floodpits Drowner enters, tap target creature an opponent controls and put a stun counter on it.

, : Shuffle Floodpits Drowner and target creature with a stun counter on it into their owners' libraries.

Mill three cards. Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Flourishing Bloom-Kin gets +1/+1 for each Forest you control.

Disguise

When Flourishing Bloom-Kin is turned face up, search your library for up to two Forest cards and reveal them. Put one of them onto the battlefield tapped and the other into your hand, then shuffle.

Whenever you cycle another card, put a +1/+1 counter on Flourishing Fox.

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

Draw a card for each Island you control, then discard two cards.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, Mice you control get +1/+0 until end of turn.

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.

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

Haste

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

: Flowstone Salamander deals 1 damage to target creature blocking it.

: Flowstone Thopter gets +1/-1 and gains flying until end of turn.

Target creature gets -X/-X until end of turn, where X is 7 minus the number of cards in that creature's controller's hand.

Each player discards any number of cards, then draws that many cards.

Draw a card.

Flying

Whenever you cast an instant or sorcery spell, you may switch Fluxcharger's power and toughness until end of turn.

, : Target creature gains flying until end of turn.

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

Target creature gets -5/-5 until end of turn. Fodder Launch deals 5 damage to that creature's controller.

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Fog Elemental attacks or blocks, sacrifice it at end of combat.

Counter target spell. If that spell is countered this way, its controller may put a creature card from their hand onto the battlefield.

When Food Coma enters, exile target creature an opponent controls until Food Coma leaves the battlefield. Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Enchant land

Enchanted land has ": Target creature gains trample and haste until end of turn."

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

, Sacrifice a Forest: Foratog gets +2/+2 until end of turn.

Buyback—Discard two cards. (You may discard two cards in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)

Counter target spell.

Enchant land

Enchanted land has ": Target creature gets +2/+1 until end of turn."

Forbidding Watchtower enters tapped.

: Add .

: Forbidding Watchtower becomes a 1/5 white Soldier creature until end of turn. It's still a land.

Counter target spell unless its controller pays .

Draw a card at the beginning of the next turn's upkeep.

Equipped creature gets +3/+0 and has vigilance and trample.

Whenever equipped creature dies, attach Forebear's Blade to target creature you control.

Equip

: Add one mana of any color. Put an omen counter on Foreboding Statue.

At the beginning of your end step, if there are three or more omen counters on Foreboding Statue, untap it, then transform it.

Devoid (This card has no color.)

: Target colorless creature gains haste until end of turn.

When Forerunner of the Empire enters, you may search your library for a Dinosaur card, reveal it, then shuffle and put that card on top.

Whenever a Dinosaur you control enters, you may have Forerunner of the Empire deal 1 damage to each creature.

When Forerunner of the Legion enters, you may search your library for a Vampire card, reveal it, then shuffle and put that card on top.

Whenever another Vampire you control enters, target creature gets +1/+1 until end of turn.

As an additional cost to cast this spell, sacrifice an artifact.

Put X +1/+1 counters on target creature, where X is the sacrificed artifact's mana value.

Constellation — Whenever Forgeborn Oreads or another enchantment you control enters, Forgeborn Oreads deals 1 damage to any target.