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.
Linking to a new target reduces all your Cooldowns by 0.5s.
Increase the Healing Spirit Links provides every 1s to your linked friendly target by 80 Health.
Using Envelop reduces your linked friendly target's Cooldowns by 12%.
Heal for 50 when you use Envelop.
Heal for 40 every 1s while Spirit Linked to an ally.
Increase the range of Chain Heal bounces by 40%.