some poeple prefer selecting moves for the flash and the unpredictability, what he wants isnt too extreme. my advice is Zap Cannon. in any battle the trainer has more than one pokemon, so have Zapdos follow up a strong grass type with sweet scent, sunny day and synthesis, and have the grass type lower the evasion, while healing itself. if zapdos is carted in before sunny day ebbs, the weather effect does no harm to zap cannon's acc.