Card Tricks with a Borrowed Deck (Vol 8): Red/Black

Imagine this: you borrow a deck of cards and ask the spectator to predict whether a bunch of cards are red or black. Then you hand them a bunch more cards and have them deal them face down into piles. When you flip them over, all the black cards are together and all the red cards are together! This is a great card trick that requires no setup and can be done by a beginner.