Target creature gains haste until end of turn.

Draw a card.

Change the text of target spell or permanent by replacing all instances of one color word with another. (This effect lasts indefinitely.)

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying, first strike

Discard a card: Switch Aquamoeba's power and toughness until end of turn.

Flying

, Discard a card: Aven Trooper gets +1/+2 until end of turn.

Other Barbarian creatures get +1/+1.

: Another target Barbarian creature gets +1/+0 until end of turn.

: Basking Rootwalla gets +2/+2 until end of turn. Activate only once each turn.

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.)

Draw four cards, then choose X cards in your hand and discard the rest.

Add .

Threshold — Add instead if seven or more cards are in your graveyard.

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

Threshold — , : Target creature gets -2/-2 until end of turn. Activate only if seven or more cards are in your graveyard.

Whenever Carrion Wurm attacks or blocks, any player may exile three cards from their graveyard. If a player does, Carrion Wurm assigns no combat damage this turn.

Trample

, Discard a card: Regenerate Centaur Veteran.

Whenever Cephalid Illusionist becomes the target of a spell or ability, mill three cards.

, : Prevent all combat damage that would be dealt to and dealt by target creature you control this turn.

Sacrifice Cephalid Snitch: Target creature loses protection from black until end of turn.

All Nightmares get +1/+1.

, Pay 3 life: Put target creature card from a graveyard onto the battlefield under your control. That creature is black and is a Nightmare in addition to its other creature types.

When Chainer, Dementia Master leaves the battlefield, exile all Nightmares.

Return target creature and target land to their owners' hands.

Destroy all enchantments.

Threshold — If seven or more cards are in your graveyard, instead destroy all enchantments, then return all cards in your graveyard destroyed this way to the battlefield.

Enchant green or white creature

Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card."

When Crazed Firecat enters, flip a coin until you lose a flip. Put a +1/+1 counter on Crazed Firecat for each flip you won.

At the beginning of your upkeep, you lose 1 life.

At the beginning of your upkeep, you may return target creature card from your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.

As an additional cost to cast this spell, discard X cards at random.

Each player sacrifices X lands of their choice. Devastating Dreams deals X damage to each creature.

, Sacrifice Enslaved Dwarf: Target black creature gets +1/+0 and gains first strike until end of turn.

When Faceless Butcher enters, exile another target creature.

When Faceless Butcher leaves the battlefield, return the exiled card to the battlefield under its owner's control.

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

Threshold — If seven or more cards are in your graveyard, instead search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle.

Flaming Gambit deals X damage to target player or planeswalker. That player or that planeswalker's controller may choose a creature they control and have Flaming Gambit deal that damage to it instead.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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.

Enchant creature

Enchanted creature gets +1/+1 and has flying.

Discard a card: Return enchanted creature to its owner's hand.

When Gravegouger enters, exile up to two target cards from a single graveyard.

When Gravegouger leaves the battlefield, return the exiled cards to their owner's graveyard.

Whenever Grotesque Hybrid deals combat damage to a creature, destroy that creature. It can't be regenerated.

Discard a card: Grotesque Hybrid gains flying and protection from green and from white until end of turn.

First strike, haste

Discard a card at random: Hell-Bent Raider gains protection from white until end of turn.

Flying

, Sacrifice Hydromorph Gull: Counter target spell that targets a creature you control.

, Discard a card: Prevent the next 3 damage that would be dealt to any target this turn.

, Sacrifice Hypochondria: Prevent the next 3 damage that would be dealt to any target this turn.

As an additional cost to cast this spell, discard X cards.

Search your library for X cards, then shuffle and put those cards on top in any order.

You gain life equal to the number of creature cards in all graveyards.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

: Target black creature gets -2/-0 until end of turn.

When Laquatus's Champion enters, target player loses 6 life.

When Laquatus's Champion leaves the battlefield, that player gains 6 life.

: Regenerate Laquatus's Champion.

Counter target spell with mana value 3 or less. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

When Longhorn Firebeast enters, any opponent may have it deal 5 damage to them. If a player does, sacrifice Longhorn Firebeast.

When Mesmeric Fiend enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card.

When Mesmeric Fiend leaves the battlefield, return the exiled card to its owner's hand.

Target player discards a card for each Swamp you control.

At the beginning of your upkeep, if twenty or more creature cards are in your graveyard, you win the game.

All creatures get -1/-1 until end of turn for each Swamp you control.

Protection from black

Threshold — Nantuko Blightcutter gets +1/+1 for each black permanent your opponents control as long as seven or more cards are in your graveyard.

When Nantuko Cultivator enters, you may discard any number of land cards. Put that many +1/+1 counters on Nantuko Cultivator and draw that many cards.

, Discard a card: Target creature gets +2/+2 until end of turn.

, Sacrifice Narcissism: Target creature gets +2/+2 until end of turn.

Draw a card.

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.)

The next instant or sorcery spell you cast this turn can't be countered.

Draw a card.

Threshold — As long as seven or more cards are in your graveyard, Pardic Arsonist has "When Pardic Arsonist enters, it deals 3 damage to any target."

Discard a card at random: Pardic Lancer gets +1/+0 and gains first strike until end of turn.

When Petradon enters, exile two target lands.

When Petradon leaves the battlefield, return the exiled cards to the battlefield under their owners' control.

: Petradon gets +1/+0 until end of turn.