If reveal contains ≥4 distinct types, all X cards go to hand.
Method: hypergeometric · Monte Carlo 25,000 trials · seed-stable.
P(FREE SPELL)
—
x=7
E[TYPES EXILED]
—
avg distinct types
MARGINAL +1X
—
Δ free spell %
04 · KERNEL · P(FREE) AND E[TYPES] vs X● P(FREE) ▮ E[TYPES]
05 · X SWEEP · STEP RESPONSEP(FREE), E[CARDS], Δ vs prev
x
p(free)
p bar
E[cards]
Δp
verdict
06 · SAMPLE REVEAL · X=7[ ↻ RESHUFFLE ]
Import a decklist to see sample reveals.
07 · TRIAL FEEDtypes · FREE / FIZZ
Primal Surge Calculator
"So do you win here or...?"
Payback modeltune what value means
A run pays for Primal Surge when its effective value reaches your threshold.
effective valueprinted MV + land value + card value
Example: 5 lands + three 1-MV dorks = 3 raw MV + 5 land value + 2 card value = 10 effective value.
Expected Permanents & Early-stop Risk
Expected Permanents Early stop (<5 permanents)
Simulation Results
Genesis Wave Calculator
"Best green mill spell in the game"
Calculation Settings
VALUE MODELtarget = X + 3 mana
Effective valueprinted MV + land bonus + card bonus
At the current X, Wave pays for itself at 9 effective mana.
Expected Permanents vs X Value
Expected Permanents Played Total Cards Revealed
X SWEEP · STEP RESPONSEE[perms], hit rate, Δ vs prev
Kamahl's Druidic Vow Calculator
"For the land and the legends"
Import Required
This calculator requires decklist import to accurately identify Legendary permanents. Please use the
📚 Deck Configuration panel above to import your decklist.
Calculation Settings
Copies the spell with the same X value, revealing 2X total cards
VALUE MODELtarget = X + 2 mana
Effective valueprinted MV + land bonus + card bonus
At the current X, Vow pays for itself at 8 effective mana.
Expected Hits vs X Value
Expected Hits (Land/Legendary) Cards Revealed
X SWEEP · STEP RESPONSEE[hits], hit rate, Δ vs prev
Monstrous Vortex Calculator
"Big Creature, Big Value"
Import Required
This calculator requires decklist import to work. Please use the
📚 Deck Configuration panel above to import your decklist.
The import will automatically detect creatures with power 5+ and CMC distribution.
Calculation Settings
Assume dynamic power creatures (like Lumra, Ashaya) are big enough to chain
Discover Value by Creature CMC
Avg Free Mana Value Avg Spell CMC Found Avg Spells Cast
DISCOVER SWEEP · BY CREATURE CMCpool, free MV, chain %
Land Drop Calculator
"Will I make my land drops?"
Opening Hand Land Distribution
Probability of Drawing X Lands
Land Drop Probability by Turn
Make Land Drop Miss Land Drop
Land Drop Statistics
Rashmi, Eternities Crafter Calculator
"The simic phyrexian arena"
Import Required
This calculator requires decklist import to work. Please use the
📚 Deck Configuration panel above to import your decklist.
The import will automatically detect CMC distribution for your non-land spells.
Calculation Settings
When revealed from library, X=0, so X spells can't be cast for free with Rashmi
Free Spell Probability vs Cast CMC
P(Free Spell) % Expected Free CMC
CAST CMC SWEEP · STEP RESPONSEP(free), Δ vs prev
Lumra, Bellow of the Woods
"Mill 4, return all lands. How big is the bear?"
Calculation Settings
Auto-detected on deck import; you can override the count.
Assumes a seven-card opener, one draw each turn, and that fetches seen can be cracked.
Lands Milled Distribution (Mill 4)
Probability
Mulligan Strategy Calculator
"Should I keep this hand?"
Card Type Requirements
Define what you need in your opening hand. Add card types (e.g. Lands, Creatures) and set your requirements.
Overrides global deck config
Strategy Settings
20%
Standard penalty. Going down a card is bad.
75%
You want a high chance to find your cards.
Strategy Summary
Probability by Turn
Hand Decision Table
Chimil, the Inner Sun
"At the beginning of your end step, discover 5."
Turns with Chimil outend steps
10end steps it survives
11020
Your deckas built
—of the library is eligible
Everything below is computed from the decklist exactly as imported.
Eligible poolMV ≤ 5, nonland
Discover hits — cards.
Lands and spells of mana value 6 or more are exiled and put on the bottom — they cost you dig, not value. Closed-form, no simulation.
Per end stepexpected value
Value accumulatedexpected, per end step
Turn sweep★ marks the payback turn
Wild Pair
"Whenever a creature enters, if you cast it from your hand, you may search your library for a creature card with the same total power and toughness, put it onto the battlefield, then shuffle."
Total power + toughnessthe search key
—power + toughness
—
——
Wild Pair matches on this number and nothing else. The slider steps through the totals your deck actually has — no empty stops. Clicking any group below moves it too.
Your deckas built
Creatures that find something: —
Matched totals: —
A 5/5 and a 3/7 match; a 5/5 and a 5/6 never do. Creatures sharing a total are interchangeable — cast any one of them and you may search up any other.
Total power + toughness spreadany column of two or more is live
Across the deckper activation, exact from the decklist
Total ladder★ marks your deepest total
Head to Head
Two payoff engines, one deck. Which is worth more when you cast a creature — and at which point in the game?
Enginespick two
VS
Assumptionshow to read the deck
A creature with a variable power box is 0 in the library but can be large on the stack. Off by default.
This deckas built
Creature casts compared: —
Leader: —
Both are measured as free mana value off a single creature cast. They do not feed each other: Wild Pair never casts its creature, and a card cast off discover comes from exile, not hand.
Value at each point in the gameby the mana value of the creature you cast
Creature by creaturewhat each cast is worth to each engine
Ensnared by the Mara Calculator
"Each opponent faces a villainous choice..."
Results
Import at least one opponent's decklist to see analysis.
Sample Reveals
Import opponent decklists to see sample simulations.
Dream Harvest Calculator
"Each opponent exiles until total MV reaches 5 or greater..."
Results
Import at least one opponent's decklist to see analysis.
Sample Reveals
Import opponent decklists to see sample simulations.
01 · CARD INFO{5}{U} Sorcery
Exile the top four cards face-down, then the top four cards face-up.
An opponent chooses one pile. Put it into your graveyard.
Look at the other pile. You may cast a spell for free. Put the rest into your hand.
02 · SCENARIOS
BESTOpponent always picks the worse pile for you (sends it to GY).
REALISTICOpponent sees face-up pile MV. Sends it to GY if above deck average.
WORSTOpponent always picks the better pile for you (denies it).