That's actually a horrible set for Clyster barring The two moves ice beam and Hydro Pump. Clyster is either a Spikes Stacker set which utilizes Focus Sash, an anti-lead set which carries Rapid Spin, or the Shell Smash set which can be used with Hydro Pump, but not in the way you use it which does virtually nothing for any good synergetic team. Sorry if that's harsh, but in no way is your set viable.