Incredible. Impossible. Impromptu. A mind melting miracle with a borrowed shuffled deck!

"David has taken a clever if slightly underwhelming effect and turned it into a lean, mean, mind bending machine. So freaking clever. I love this trick, wish I had thought of it!"
- Cameron Francis

"David floored me with this beautiful effect!"
- John Carey

"What David has done with THREESUM is nothing short of incredible! Seriously, no smoke blowing here. How he managed to take an old principal in card magic, remove all the procedure and dress the diabolical secret in a super direct and commercial routine, I'll never know."
- Kyle Purnell

"Simple. Direct. Impromptu. What a cool routine!"
- Caleb Wiles

"My new go-to impromptu card effect. Hands down."
- Nikolas Mavresis

"The first, second and third rule of magic is not to be fooled by a principle that you already know... but David totally fooled me with this one!"
- Vinny Sagoo

THREESUM is a super direct and powerful routine with a regular shuffled deck. Best of all, as unbelievable as this may sound, it requires no setup, every selection is a genuinely free choice and it is 100% impromptu. This is all thanks to the ancient principle that has been unearthed and entirely reworked from the ground up to create this deceptive miracle.