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 the Healing Spirit Links provides every 1s to your linked friendly target by 80 Health.
After taking -375 damage, your next use of Chain Heal does not cause it to go on Cooldown.
Increase your maximum Health by 150.
Increase your maximum Ammo by 6.
Heal for 100 when you use Envelop.
Spirit Link's Cooldown is increased to 7s and it now only lasts for 4s, but its base effects are tripled.