Those Articuno sets look interesting; I would probably use the Substitute set to avoid being murdered by Scizor. That said, you have a massive SR weakness, (possibly) substitute, no healing, and only base 95 SpA. Though it has its uses, I would just use one of the more tried and true rain abusers.
Now for my set:
252 HP, 4 Def, 252 SpD
- Ice Beam
- Magic Coat
This set isn't as original as most of the sets in the previous thread, but I used this set on my sun team to great success. It serves as an excellent special wall thanks to the unusual EVs, and makes up for the lack of an actual status move with Discharge. Against rain teams, I invariably led with this duck. Opposing Politoed almost always used Toxic on turn one, which resulted in a poisoned Politoed. Magic Coat is also extremely useful against things like Ferrothorn, Skarmory, or defensive Heatran who think they can set up hazards/ status you/ phaze you.