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ScryBrew Tools
Mana Base Calculator
Check whether source counts support a color or land-drop target by a turn.
Inputs
Result
79%
Probability
Chance to see at least 3 of 24 sources by turn 3.
This uses exact hypergeometric math from the shared goldfish package.
Why it matters
A deck can have the right spells and still fail because its color sources do not show up on time. This calculator makes cast-on-curve pressure visible before testing games.