As Arcane Adaptation enters the battlefield, choose a creature type. Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Change the text of target spell or permanent by replacing all instances of one creature type with another. The new creature type can't be Wall. (This effect lasts indefinitely.)

Changeling (This card is every creature type.) Up to two target creatures each get +2/+0 and gain all creature types until end of turn.

As Conspiracy enters the battlefield, choose a creature type. Creatures you control are the chosen type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Changeling (This card is every creature type.) Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.

{T}: Choose a creature type other than Wall. Target creature becomes that type until end of turn.

Imprint — When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand. {2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

Changeling (This card is every creature type.) Target creature gets +3/-3 and loses all creature types until end of turn.

Changeling (This card is every creature type.) {2}{U}: Target Shapeshifter becomes a copy of target creature until your next turn.

Changeling (This card is every creature type.) Creatures target player controls get +0/+1 and gain all creature types until end of turn.

Choose a creature type other than Wall. Each creature becomes that type until end of turn.

{T}: Add one mana of any color. Sacrifice Atzocan Seer: Return target Dinosaur card from your graveyard to your hand.

{1}, {T}: Add {W}{U}.

Coldsteel Heart enters the battlefield tapped. As Coldsteel Heart enters the battlefield, choose a color. {T}: Add one mana of the chosen color.

{1}, {T}: Add {U}{B}.

{1}, {T}: Add {W}{B}.

{1}, {T}: Add {B}{R}.

{T}: Add {C}{C}.

At the beginning of your upkeep, you may add {C}{C}. You can't spend this mana to cast spells.

All Nightmares get +1/+1. {B}{B}{B}, 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.

Destroy target non-Zombie creature. It can't be regenerated. Return up to one target Zombie card from your graveyard to your hand.

Choose one — • Destroy all Dragon creatures. • Destroy all non-Dragon creatures.

{T}: Destroy target Wall.

Destroy all creatures of the creature type of your choice.

When Hazezon Tamar enters the battlefield, create X 1/1 Sand Warrior creature tokens that are red, green, and white at the beginning of your next upkeep, where X is the number of lands you control at that time. When Hazezon leaves the battlefield, exile all Sand Warriors.

Mercenary Informer can't be the target of black spells or abilities from black sources. {2}{W}: Put target nontoken Mercenary on the bottom of its owner's library.

{1}: Flip a coin. If you win the flip, target Orc creature gets +2/+0 until end of turn. If you lose the flip, it gets -0/-2 until end of turn.

Whenever a player casts a creature spell, destroy all Reflections. Then that player creates an X/X white Reflection creature token, where X is the mana value of that spell.

Rebel Informer can't be the target of white spells or abilities from white sources. {3}: Put target nontoken Rebel on the bottom of its owner's library.

At the beginning of your upkeep, if there are no Reflection tokens on the battlefield, create a 2/2 white Reflection creature token. {0}: Destroy target Reflection.

{W}, {T}: Exile target Skeleton, Vampire, or Zombie.

Whenever Varchild, Betrayer of Kjeldor deals combat damage to a player, that player creates that many 1/1 red Survivor creature tokens. Survivors your opponents control can't block, and they can't attack you or planeswalkers you control. When Varchild leaves the battlefield, gain control of all Survivors.

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Flying At the beginning of your upkeep, return target Spirit card from your graveyard to your hand.

{T}: Target player loses 1 life. {4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

At the beginning of your upkeep, you may sacrifice Blood Speaker. If you do, search your library for a Demon card, reveal that card, put it into your hand, then shuffle. Whenever a Demon enters the battlefield under your control, return Blood Speaker from your graveyard to your hand.

Enchant creature Enchanted creature can't attack or block.

Search your library for a Mercenary card, reveal that card, put it into your hand, then shuffle.

Flying {4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Choose one — • Return target creature card from your graveyard to your hand. • Return two target Zombie cards from your graveyard to your hand.

Return a Pirate card from your graveyard to your hand, then do the same for Vampire, Dinosaur, and Merfolk.

You may cast Haakon, Stromgald Scourge from your graveyard, but not from anywhere else. As long as Haakon is on the battlefield, you may cast Knight spells from your graveyard. When Haakon dies, you lose 2 life.

{X}, {T}: Search your library for a Rebel permanent card with mana value X or less, put it onto the battlefield, then shuffle. {3}: Put target Rebel card from your graveyard on the bottom of your library.

Choose one — • Return target creature card from your graveyard to your hand. • Return two target Pirate cards from your graveyard to your hand.

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

{3}, {T}: Search your library for a Rebel permanent card with mana value 2 or less, put it onto the battlefield, then shuffle.

Vigilance As Riders of Gavony enters the battlefield, choose a creature type. Human creatures you control have protection from creatures of the chosen type.

Flying, hexproof Whenever a Dragon you control attacks, creatures defending player controls get -1/-1 until end of turn.

Return all creatures to their owners' hands except for Krakens, Leviathans, Octopuses, and Serpents.