Some small stuff:
Getting Shell Smash is very good for it in lower tiers
It lost Scald which sucks, but in exchange it got Spikes, SR, and Toxic Spikes!? No more Burn fishing and lowered Recover PP definitely sucks, but being a bulky Water/Ground with access to these hazards is going to be really nice in lower tiers.
Step 1: make sure non-quad Ice weak Grounds like Hippowdon are chipped
Step 2: Go to Regieleki
Step 3: Tera Ice
Step 4: Profit
Seriously though, having STAB Ice on Regieleki is insane. And you get to keep your Electric STAB+Transistor!