Titan's Resolve

You generate a stack of Juggernauting for each instance of damage you deal or take (excluding damage over time), lasting for 6 seconds and refreshing on subsequent damage dealt or taken. For every 10 stacks of Juggernauting, you gain 15 – 45 (based on level) bonus Attack Damage or 25 – 75 (based on level) Ability Power (Adaptive), 5 – 10 (based on level) bonus armor and bonus magic resistance, 10% increased size, and 8% tenacity. Stacks expire one by one when the duration ends, with the decay rate being faster the more stacks you have.