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.
PASSIVE - Enemies hit by your damaging abilities will move 30% Slower and will have Shields applied on them reduced by 50% for 2.5 seconds. This can only occur once every 2.5 seconds.
PASSIVE - Enemies hit by your abilities have 40% reduced healing for 5 seconds.
PASSIVE - Your first ability cast gains 20% Magical Penetration. This can only occur once every 10 seconds.