Cavern of Souls

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, and that spell can't be countered.

Gloomlake Verge

{T}: Add {U}.
{T}: Add {B}. Activate only if you control an Island or a Swamp.

Island

Restless Reef

This land enters tapped.
{T}: Add {U} or {B}.
{2}{U}{B}: Until end of turn, this land becomes a 4/4 blue and black Shark creature with deathtouch. It's still a land.
Whenever this land attacks, target player mills four cards.

Shipwreck Marsh

This land enters tapped unless you control two or more other lands.
{T}: Add {U} or {B}.

Swamp

Undercity Sewers

({T}: Add {U} or {B}.)
This land enters tapped.
When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Watery Grave

({T}: Add {U} or {B}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Deceit

When this creature enters, if {U}{U} was spent to cast it, return up to one other target nonland permanent to its owner's hand.
When this creature enters, if {B}{B} was spent to cast it, target opponent reveals their hand. You choose a nonland card from it. That player discards that card.
Evoke {U/B}{U/B}

Overlord of the Balemurk

Impending 5—{1}{B} (If you cast this spell for its impending cost, it enters with five time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.)
Whenever this permanent enters or attacks, mill four cards, then you may return a non-Avatar creature card or a planeswalker card from your graveyard to your hand.

Seasoned Cryomancer

When this creature enters, draw two cards, then discard two cards. When you discard one or more nonland cards this way, tap up to that many target creatures and put a stun counter on each of them.
{3}{U}{U}, Exile this card from your graveyard: Draw two cards.

Superior Spider-Man

Mind Swap — You may have Superior Spider-Man enter as a copy of any creature card in a graveyard, except his name is Superior Spider-Man and he's a 4/4 Spider Human Hero in addition to his other types. When you do, exile that card.

Uldaros Theorix

Copy

Flying
When Uldaros Theorix enters, if you cast him, exile up to one target nonland card of each card type from your graveyard. Copy those cards. You may cast any number of spells with total mana value 6 or less from among the copies without paying their mana costs. (Permanent spells cast this way become tokens.)

Bitter Triumph

As an additional cost to cast this spell, discard a card or pay 3 life.
Destroy target creature or planeswalker.

Deadly Cover-Up

As an additional cost to cast this spell, you may collect evidence 6.
Destroy all creatures. If evidence was collected, exile a card from an opponent's graveyard. Then search its owner's graveyard, hand, and library for any number of cards with that name and exile them. That player shuffles, then draws a card for each card exiled from their hand this way.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Intimidation Tactics

Target opponent reveals their hand. You choose an artifact or creature card from it. Exile that card.
Cycling {3} ({3}, Discard this card: Draw a card.)

Requiting Hex

As an additional cost to cast this spell, you may blight 1. (You may put a -1/-1 counter on a creature you control.)
Destroy target creature with mana value 2 or less. If this spell's additional cost was paid, you gain 2 life.

Spell Snare

Strategic Betrayal

Target opponent exiles a creature they control and their graveyard.

Theorix Charm

Choose one —
• Counter target noncreature spell unless its controller pays {2}.
• Target creature gets -2/-2 until end of turn.
• Mill three cards, then draw a card. (To mill three cards, put the top three cards of your library into your graveyard.)

Vraska's Final Mercy

Jace

Choose one —
• You lose 2 life. Destroy target creature or planeswalker.
• You lose 2 life. Empower Jace 6. (Put six loyalty counters on a Jace token you control. If you don't control one, first create a blue Jace planeswalker token with "[−1]: Surveil 1" and "[−3]: Draw a card.")

Winternight Stories

Draw three cards. Then discard two cards unless you discard a creature card.
Harmonize {4}{U} (You may cast this card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by {X}, where X is its power. Then exile this spell.)

Illusion

The Theorist, Jace Beleren

At the beginning of each opponent's draw step, you draw a card.
+1: Create a 1/1 blue Illusion creature token.
−2: For each opponent, return up to one target artifact or creature that player controls to its owner's hand.
−6: Draw three cards. Then put X +1/+1 counters on each creature you control, where X is the number of cards in your hand.

Annul

Counter target artifact or enchantment spell.

Day of Black Sun

Each creature with mana value X or less loses all abilities until end of turn. Destroy those creatures.

Disdainful Stroke

Counter target spell with mana value 4 or greater.

Emeritus of Ideation

Flying, ward {2}
This creature enters prepared.
Whenever this creature attacks, you may exile eight cards from your graveyard. If you do, this creature becomes prepared.

Ancestral Recall

Emeritus of Ideation // Ancestral Recall

Flashfreeze

M.O.D.O.K.

Flying, lifelink
Mental Organism — Pay 3 life: M.O.D.O.K. connives. Activate only during your turn. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)
Designed Only for Killing — Creatures your opponents control get -1/-1.

Null Summoner

When this creature enters, if you cast it, target opponent reveals their hand. You choose a nonland card from it. Exile that card.
Threshold — As long as there are seven or more cards in your graveyard, you may cast the exiled card, and mana of any type can be spent to cast that spell.

Terminal Criticism

Destroy target creature or planeswalker that's blue or red. You gain 1 life.

Manasources	Probability
1	98.26%
2	87.75%
3	62.53%
4	31.35%
5	9.91%
6	1.73%
7	0.12%

Color Pip	Probability
	97.84%
	94.18%
	11.67%
	11.67%
	11.67%
	11.67%

MTGO Challenge 32

Lands (25)

Creatures (16)

Instants (8)

Sorceries (8)

Planeswalkers (3)

Sideboard (15)

Probability of drawing any mana sources in your first 7 cards

Probability of drawing a mana source of a specific color pip in your first 7 cards

Mana Cost Distribution

Mana Density