>>48919689Look at it like how many chances you get to roll the shiny number instead of odds that are borderline mislead (see math)
MM=1 normal roll + 5 bonus rolls
Shiny charm=1 normal roll + 2 bonus rolls
MM + shiny charm=1 normal roll + 7 bonus rolls
The math in pic related is MM alone with no shiny charm. With shiny charm and MM it works out to 2357 eggs for a 99% chance for at least one shiny, 1180 eggs for 90%, 354 eggs for 50%