While at it, IMO Sheltron shines best in scenarios where bosses don't hit you while physical tank busters come. Auto easily eats Sheltron that it makes it shitty for that. Compare that to let's say Chesed, Heavenly Heel, Double Rocket Punch (it hits for a lot even with tanks sharing in A8S) where bosses stop hitting you while channeling those tank busters. Unless if you are great at knowing the exact timing for every auto + tank buster for anything else, it's pretty much used on cooldown for that Shield Swipe procs.