As this creature enters, choose a color.
All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)
Search your library for a card, exile it face down, then shuffle. If this spell was bargained, you may cast the exiled card without paying its mana cost if that spell's mana value is 4 or less. Put the exiled card into your hand if it wasn't cast this way.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays .

Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip

Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.

Enchant creature
As long as enchanted creature is blue, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, draw a card."
As long as enchanted creature is black, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, that player discards a card."

Copy target instant or sorcery spell, except that the copy is red. You may choose new targets for the copy.

Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell's mana value.

Domain — This spell costs less to cast for each basic land type among lands you control.
Flying
Domain — At the beginning of your upkeep, sacrifice this creature unless you pay . This cost is reduced by for each basic land type among lands you control.

You may spend mana as though it were mana of any color to activate abilities of creatures you control.
Creatures you control with +1/+1 counters on them have all activated abilities of all creature cards exiled with Agatha's Soul Cauldron.
: Exile target card from a graveyard. When a creature card is exiled this way, put a +1/+1 counter on target creature you control.

As Three Tree City enters, choose a creature type.
: Add .
, : Choose a color. Add an amount of mana of that color equal to the number of creatures you control of the chosen type.

Flying
Spells your opponents cast that target this creature cost an additional 3 life to cast.
Whenever another creature you control enters, this creature deals damage equal to that creature's power to any target.

Untap all creatures and gain control of them until end of turn. They gain haste until end of turn.

: Return target land you control to its owner's hand.
, Discard a land card: Draw a card.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Counter target spell.

Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.
At the beginning of combat on your turn, if The Ozolith has counters on it, you may move all counters from The Ozolith onto target creature.

: Add one mana of any type that a land you control could produce.

, : Choose a card name, then reveal a card at random from your hand. If that card has the chosen name, this artifact deals 2 damage to any target.

Flash
You control your opponents while they're searching their libraries.
While an opponent is searching their library, they exile each card they find. You may play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any color to cast them.