This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Every Soul Orb stack you detonate increases your Movement Speed by 4% for 4s, up to a maximum of 15%.
Increase your Ultimate charge rate by 14%.
Your Movement Speed is increased by 32% while any enemy is marked with a Soul Orb stack.
Increase your maximum Ammo by 2.
Increase the Healing done by Rend Soul by 32%.