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.
Hitting an enemy with Presence reduces its Cooldown by 5s.
Increase your maximum Ammo by 1.
Generate 3 Ammo after using Grace.
Generate 1 Ammo for each enemy hit with Valor.
Reduce your active Cooldowns by 40% after getting an Elimination.
Grace now hits all enemies in front of you instead of only one, but its Cooldown is increased by 1s.