The List

Whenever you cast a permanent spell with a mana cost that contains X, double the value of X. Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains X, copy that spell or ability. You may choose new targets for the copy.

Choose one — • Put a +1/+1 counter on each of up to two target creatures. • Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) Entwine 3W (Choose both if you pay the entwine cost.)

Target player discards two cards. Cycling 2 (2, Discard this card: Draw a card.)

Return target creature card from your graveyard to the battlefield. Flashback 3W (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target creature gets +1/+1 and gains double strike until end of turn.

Protection from white (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything white.) This creature gets +2/+0 as long as it's attacking.

As this land enters, choose a creature type. T: Add C. T: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Creatures your opponents control get -2/-0 until end of turn. Draw a card.

Whenever this creature or another Zombie you control dies, you draw a card and lose 1 life.

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

1, Sacrifice a creature: Target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Target opponent sacrifices a creature of their choice. If you control a creature with power 4 or greater, you gain 4 life.

T: Add C. 5, T, Exile this land: Roll a d10. Put target artifact, creature, or planeswalker into its owner's library just beneath the top X cards of that library, where X is the result. Activate only as a sorcery.

Constellation — Whenever this creature or another enchantment you control enters, you gain 1 life. WB, Pay 1 life: Each opponent loses 1 life.

When this creature enters, create a number of 1/1 green Squirrel creature tokens equal to your devotion to black. (Each B in the mana costs of permanents you control counts toward your devotion to black.)

Return two target creatures to their owners' hands.

Enchant creature Enchanted creature gets +2/+2 and can't block. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. Cycling 2 (2, Discard this card: Draw a card.)

Put a +1/+1 counter and a lifelink counter on target creature.

Shuffle your library, then reveal the top card. If it's a nonland card, you may cast it without paying its mana cost. If it's a land card, you may put it onto the battlefield and return Unexpected Results to its owner's hand.

As an additional cost to cast this spell, discard a card. Draw two cards and create two Treasure tokens. (They're artifacts with "T, Sacrifice this token: Add one mana of any color.")

Enchant creature Enchanted creature gets +2/+2 and has trample and lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)

T: Add C. B, T: Put target Zombie card from your graveyard on top of your library.

Changeling (This card is every creature type.)