Two things to make Sentinel of Radiance a lot more pleasant

1) Drastically increase his duration time, 30 seconds is way too short and it kind of ruins the fun of this build to constantly have to recast the sentinel. It should be at least 2 mns.

2) Make it so that he sticks to you either by increasing his movement speed or making him teleport on you very frequently.

After these two changes this build could really be very funny, now it feels clunky and quite frankly pretty annoying to always have to summon him again and not always benefitting from his damages.