Ah, choice items. The magic of choice items.
Maybe I'll refrain from doing a writeup just so Hypershell can be surprised when you play him.
Don't think sunny day woulda helped, either. You might have been able to take out Ludicolo, but I woulda just switched in Electode, danced again with his 1 hp before he got killed, and then things woulda gone just like they did.