Super Ghost Commander Kalista (URF Concept)

This is actually a fairly simple concept for URF gameplay with Kalista, and I'm even pretty sure it has been done. I'm just wanting to share it because I know that another URF round is coming up fairly soon, and I believe is currently live on PBE, so I was thinking if anyone wanted to try it out, that would be awesome. If you have tried it and have any feedback on it, please let me know.

So the idea revolves around her W, Sentinel's active ability. Basically, you will be spamming your Sentinels out as often as possible into the jungle near what ever lane you are in. Try to maximize the length of their path so they will have extra time to make their three laps and will stay up as long as possible. On URF you will have a 6 second cooldown at all ranks of this ability, and the recharge time will be 18/16/14/12/10 seconds. This in a lane with a support will also be helpful because your 5/7.5/10/12.5/15% of target's maximum health in bonus magic damage. (I'm not sure if the 10 second cooldown is also reduced on this ability)

Even in a solo lane, this wouldn't be a very strong 'build' but it would be very safe. You can build anything you feel works best on her and play your lane as a 1v1 match up because you SHOULD know well in advance if anyone is trying to set up a gank. I honestly think this would be more fun than anything because it would be so frustrating to your enemy jungler.

Let me know what you guys think about this idea.