Diana Ability (LoL): Pale Cascade

Diana creates three orbiting spheres for 5 seconds that detonate on contact with enemies to deal 18 / 30 / 42 / 54 / 66 (+15% of ability power) (+10% bonus health) magic damage per orb in an area. She also gains a temporary shield that absorbs 30 / 45 / 60 / 75 / 90 (+30% of ability power) damage. This shield is refreshed if all three spheres detonate and the shield reapplied, stacking with its original shield.