Lotus Petal

{T}, Sacrifice this artifact: Add one mana of any color.

Elvish Spirit Guide

Exile this creature from your hand: Add {G}.

Thassa's Oracle

When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Cabal Ritual

Add {B}{B}{B}.
Threshold — Add {B}{B}{B}{B}{B} instead if there are seven or more cards in your graveyard.

Dark Ritual

Pact of Negation

Counter target spell.
At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

"Now is the death-hour, just before dawn. Wake, sleepers, and haunt the living!"
—Vivias, Witch Vessel

Agadeem's Awakening

Return from your graveyard to the battlefield any number of target creature cards that each have a different mana value X or less.

"Here below the hedron fields, souls and secrets lie entombed."
—Vivias, Witch Vessel

Agadeem, the Undercrypt

As this land enters, you may pay 3 life. If you don't, it enters tapped.
{T}: Add {B}.

Agadeem's Awakening // Agadeem, the Undercrypt

Cabal Therapy

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Dread Return

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

Reanimate

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to that card's mana value.

Thoughtseize

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Manasources	Probability
1	99.54%
2	94.91%
3	77.53%
4	46.33%
5	17.36%
6	3.45%
7	0.27%

Color Pip	Probability
	88.75%
	88.75%
	63.47%
	63.47%
	63.47%
	0.00%

Necro Storm

Artifacts (4)

Creatures (5)

Instants (12)

Lands (4)

Sorceries (8)

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