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I'm interested in the HP Ice Thundurus - I'll clone and send you one back.
Unfortunately, I don't have SR legendaries of my own to offer, but I would be able to get you the following 5IVs:
Amoonguss: Sassy Regenerator 31/x/31/31/31/0
Bagon: Naughty/Rash Rock Head 31/31/x/31/31/31 or...