>>41361675Rocky terrain is literally just sandstorm. Icy terrain isn't necessary, hail should be changed to boost the Defense of Ice-types by 50%, hell give Ice-types more resistances too. I wouldn't opt for giving the Regis weather-type gimmicks anyway, that's been done and then some.
>Rock Peak BodyPrevents Attack and Defense from being lowered and recovers 12% HP when a Rock-type move is used, both Regirock and adjacent Pokemon. Maybe only 6% HP if 12% is too much.
>Deep Frozen BodyPrevents Sp. Atk and Sp. Def from being lowered and has a 30% chance of freezing targets that make contact with Regice or vice versa.
>Full Metal Body (thanks Solgaleo)Prevents Defense and Sp. Def from being lowered and lowers power of super-effective moves against Registeel by 25%.
>Ancient Body (replaces Slow Start)Increases Defense and Sp. Def by 50% when any stat is lowered. Attack and Speed are lowered by 3 stages upon entry. Each lowered stat is raised by 1 stage each turn until back to normal.
As for signature moves:
>Rock RepairRecovers 33% HP and raises Defense, has 15 PP.
>CryotherapyRecovers 33% HP and raises Sp. Def, has 15 PP.
>Steel TemperRecovers 33% HP and raises either Defense or Sp. Def, has 15 PP.
>Crush GripNow functions as a reverse Brine. Regigigas can now also learn Protect and Rest, fuck you.