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.)

Target creature gains haste until end of turn.
Draw a card.

As an additional cost to cast this spell, discard X cards.
Return X target cards from your graveyard to your hand. Exile Nostalgic Dreams.

Reach (This creature can block creatures with flying.)
Threshold — This creature gets +2/+2 as long as there are seven or more cards in your graveyard.

Enchant creature
Enchanted creature gets +1/+2 and has protection from black.
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.)

Enchant creature
When this Aura enters, draw a card.
Enchanted creature's activated abilities can't be activated.

Target player discards two cards at random unless that player has Skullscorch deal 4 damage to them.

As an additional cost to cast this spell, discard X cards.
Sickening Dreams deals X damage to each creature and each player.

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.

Exile all graveyards.

Enchant creature
Enchanted creature gets +2/+1 and has protection from white.
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.)

Flying
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and has protection from black.

When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card.
When this creature leaves the battlefield, return the exiled card to its owner's hand.

When you control no Swamps, sacrifice this creature.

As an additional cost to cast this spell, discard X cards.
Return X target nonland permanents to their owners' hands.

Whenever this creature 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.

Counter target spell unless its controller pays for each card in your graveyard.
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.)

Destroy target enchantment.
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.)

: Untap target land.
Threshold — : Untap up to three target lands. Activate only if there are seven or more cards in your graveyard.

Target creature gets -2/-2 until end of turn.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
When this creature enters, exile target green or white creature an opponent controls.
When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control.

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.

Protection from black
At the beginning of your upkeep, sacrifice this creature unless you put a card from your graveyard on the bottom of your library.

Destroy target land.
Threshold — If there are seven or more cards in your graveyard, instead destroy that land and Rancid Earth deals 1 damage to each creature and each player.

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

Protection from black
Threshold — This creature gets +1/+1 for each black permanent your opponents control as long as there are seven or more cards in your graveyard.

: Each player loses 1 life for each Swamp they control.

Enchant creature
Enchanted creature has ": This creature gets +1/+1 until end of turn."
When enchanted creature dies, return that card to the battlefield under your control.

Enchant creature
As this Aura enters, choose a color.
Enchanted creature has protection from the chosen color. This effect doesn't remove this Aura.
Sacrifice this Aura: Target creature gains protection from the chosen color until end of turn.

, Exile three cards from your graveyard: Target player loses 3 life.

, Discard a card at random: This enchantment deals 1 damage to any target.
, Sacrifice this enchantment: It deals 1 damage to any target.

First strike, haste
Discard a card at random: This creature gains protection from white until end of turn.

Tap an untapped Zombie you control: Target land becomes a Swamp until end of turn.
Tap an untapped Zombie you control: Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)

Vigilance
: Prevent the next 1 damage that would be dealt to any target this turn.

: Target player mills three cards.

Fiery Temper deals 3 damage to any target.
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.)