Something I have used for some time now. Haven't had any issues personally. Putting this here for my own notes.

Overall, it's ok. Your first combo will grant you 100% Yellow Crit on every single hit followed by a 27% chance for each hit to be a Orange Crit. By the 5th combo multiplier you are guaranteed 100% Orange Crit with a 11% chance to Red Crit on each hit while you sustain that combo. By your 9th combo multiplier you have a total of 295%. That's 100% guarantee to orange Crit with a 95% chance to Red Crit on each hit. By your 10th combo multiplier every sustained hit will be a guaranteed Red Crit at a total of 316.02% followed by a 16.02% chance to [Reach] a Tier 4 Red Crit.

*** Assuming my math is correct