We present a probabilistic framework for analyzing creature selection effects in Magic: The Gathering, focusing on Winding Way and Lead the Stampede. Using hypergeometric distributions, we derive exact expressions for the probability of revealing specific numbers of creatures under both complete and incomplete information. Our analysis provides strategic guidance for deck construction and in-game decision-making, quantifying the expected value of these card selection tools across varying deck compositions and game states.
Hypergeomancer (Sat,) studied this question.