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.
Increase your Movement Speed by 5% and gain {scale=5|5}% Lifesteal for 2s after falling to or below 40% Health.
Increase your maximum Health by 50.
Reduce the cooldown of Tendril by 3s.
Gain a 225 Shield for 5s after activating Tendril.
Reduce the Cooldown of Dark Siphon and Obliteration by 2s after activating Tendril.