Basic attacks apply a Silver Bolts stack. Attacking a new enemy removes all her stacks from the previous target. The third stack consumes them all to deal 8 / 12 / 16% of target's maximum health bonus true damage.
Every 3 seconds, Rangers have a chance to gain double attack speed for 3 seconds.
At the start of combat, select allies gain 50 armor and 50 magic resistance and basic attacks restore 30 health on-hit: