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 20% and gain {scale=5|5}% Lifesteal for 2s after falling to or below 40% Health.
Reduce the damage you take by 8% for 3s after activating Tendril.
Increase your maximum Health by 250.
Reduce the Cooldown of Dark Siphon by 2s if it fails to hit a target.
Heal for 120 for each enemy hit with Obliteration.