Hypergeometric calculator
Chance to have the cards you need by a given turn: one or more groups of cards, each with a minimum number of copies, all together. Count the copies yourself or from a deck.
Counting from Mono Red Madness · A_AdeptoTerra · Pauper Challenge 16: 60 cards in the main deck.
Result
Write how many copies of the cards you want are in the deck.