The idea is to essentially make a TSurin that has revive. As some may recall, TSurin was at one point one of those heroes everyone complained about. What made her so strong was that the fact she couldn't be one-shot, same as SEC. Plus the self CR push/cleanse/stealth when she took significant damage made it so she could cut ahead of opponents if you hit her, and then do relatively big damage, usually healing herself back up to full or near full since she'd be built on lifesteal set. 

So why not just build SEC pure speed? The idea is to take advantage of her unique buff similar to Rem. The ideal is to have her remain slow so that she has a lot of uptime on that buff relative to the opponent 's turn cycling, hopefully inducing them to hit her and trigger her counterattacks. The idea for the Revenge set here would be that she'd be fast enough on the set so she can naturally take turns without easily being left aside or singled out for lapping, but slower than everyone else so that she gets longer uptime on the Possession buff. Then, when she does take damage, Revenge set would boost her up, similar (I would hope) to TSurin's CR push, so that she can cut in, get in a quick hit to heal herself back up, and then because of the regained health slow back down to keep the Possession effect going longer term. 

I would imagine the speed would have to be around 200-220, with heavy dps stats. Has anyone attempted this sort of build with her? If so, what has been the drawbacks seen? Is the system itself not a functional setup, a matter of getting enough stats, or something else?