Draw calculator
Good deck-building is partly maths. This shows the real chance of drawing the card you need, and how often a hand goes wrong. It is a lovely way to show a child that the numbers behind the game make sense.
Will I draw my card?
Set how many copies are in the deck and how many cards you will have seen, and we work out the real odds.
Show me how this is worked out
Chance of a redraw (mulligan)
If an opening hand has no Basic Pokémon, the player shows it and draws a fresh seven. More Basic Pokémon in the deck means this happens less.
Keeping this under 15% usually means around 14 or 15 Basic Pokémon in a 60 card deck. Many decks settle for roughly one game in five, about 12 Basics, as a fair balance.
How it works
The tool uses the same maths card players call the hypergeometric calculation: drawing from a shuffled deck without putting cards back. It is exact, not a guess. A good rule of thumb is that four copies of a card in a 60 card deck gives roughly a 40% chance of seeing one in your opening seven, which is why players add search cards to find the rest.