Si Stebbins (Absolute Math Magic 💎)

Here, I present the construction and several applications of (perhaps) the oldest and most utilized deck stacking system in history: Si Stebbins.
The highly structured and interwoven cyclic organization of Si Stebbins has enabled the mathematically astute to design countless routines and performances that have surprised and delighted audiences for more than a century.

[@kansasisaband]

You can also use STEP 3 to FIND any card named in the deck as well. But you gotta be good at math subtracting for the value of the suit.
DIAM subtract 0
Spade -1
Heart -2
Club -3