The difference on leveling up broken wings or ki burst is damage and cooldowns. I prefer broken wings cause it does more damage per lvl, which helps farming and killing heroes. Ki burst cd goes down but its damage doesnt go up as high as broken wings. Each lvl reduces the cd by 1 except. u have cd reduction so its so its less than 1. When comes down to it more damage or .7 cd reduction per lvl? Plus I saw SOONER use my skill sequence :)
I begin by maxing out Broken Wings because it is a very effective skill when leveled up. It is great for farming, chasing and escaping. Broken Wings over Ki Burst because Broken Wings does extra 120 damage compare to Ki Burst and in early game that can make all the difference and the more damage you do the more your ult does. Now I know that Ki Burst cd goes down as you lvl it up but with CDR its only like .6 sec reduced per lvl compare to more damage and bigger ult damage in early game.
Ki Burst and Broken Wings are great for farming when combined.
I max out Ki Burst before Valor because Ki Burst is AoE. Your choice is to hit 3 people for 210 damage versus protecting yourself from 160 damage. However, both skills have the same cool down and AD ratio.
In Noxus, any citizen may rise to power regardless of race, gender, or social standing -- strength is all that matters. It was with committed faith in this ideal that Riven strove to greatness. She showed early potential as a soldier, forcing herself to master the weight of a long sword when she was barely its height. She was ruthless and efficient as a warrior, but her true strength lay in her conviction. She entered battles without any trace of doubt in her mind: no ethical pause, no fear of death. Riven became a leader amongst her peers, poster child of the Noxian spirit. So exceptional was her passion that the High Command recognized her with a black stone rune sword forged and enchanted with Noxian sorcery. The weapon was heavier than a kite shield and nearly as broad -- perfectly suited to her tastes. Soon after, she was deployed to Ionia as part of the Noxian invasion.
What began as war quickly became extermination. Noxian soldiers followed the terrifying Zaunite war machines across fields of death. It wasn't the glorious combat for which Riven trained. She carried out the orders of her superiors, terminating the remnants of a beaten and fractured enemy with extreme prejudice. As the invasion continued, it became clear that the Ionian society would not be reformed, merely eliminated. During one bitter engagement, Riven's unit became surrounded by Ionian forces. They called for support as the enemy closed in around them. What they received instead was a barrage of biochemical terror launched by Singed. Riven watched as around her Ionian and Noxian alike fell victim to an unspeakably gruesome fate. She managed to escape the bombardment, though she could not erase the memory. Counted dead by Noxus, she saw an opportunity to start anew. She shattered her sword -- severing ties with the past -- and wandered in self-imposed exile. Now she seeks atonement and her own way to serve the pure Noxian vision in which she believed.