Im planing on breeding a Cloyster with moves learned like Clamp, Spikes, and hail. Im wondering will these moves stack with each other?
Clamp and hail stack, because they both happen between turns. Spikes doesn't stack with the other two because it only does damage when Pokemon switch in.
If you want to use this Cloyster for any kind of battling, then I would suggest not having it know hail or clamp (but spikes might be good) because using those moves often deals less damage than simply attacking the opponent.