01
Exact calculation
Simple opening-hand conditions use the hypergeometric distribution with no sampling error.
Deck analysis that stays in your browser
Turn opening-hand intuition into verifiable numbers.
Model opening hands, draws, searches, and mulligans, then compare deck consistency with exact calculations and reproducible simulations.
All deck data and calculations stay in your browser. Your deck list is never sent to our servers.
DrawState
82.4%
95% · 82.17–82.64
ANALYSIS, NOT GUESSWORK
Three perspectives for better deck decisions
02
Reproducible simulation
Scenarios involving draws and searches include the seed and a 95% confidence interval.
03
Copy-count sensitivity
See immediately how changing card counts affects your success rate.
FROM LIST TO DECISION
Structure matters more than card names.
Combine card counts, tags, draw and search effects, and success conditions without relying on a game-specific database. Unlisted cards are handled automatically as Filler.
Effect modeling guide- 1Enter rules
Deck, opening hand, and turn draws
- 2Build success goals
Cards, tags, and AND/OR groups
- 3Interpret results
Uncertainty and duplicate hands