What about a set of Claw Sharpen/Blizzard/Thunder/X-Scissor? Thunder is better than Zap Cannon being that apparently Claw Sharpen only boosts Zap Cannon to ~67% or so after one accuracy boost which is...well, we need something that learns Zap Cannon and No Guard sometime. Ugh, 67% is bad. While Blizzard/Thunder have over 90%...and Thunder has the same base power as Zap Cannon as well as 30% chance of paralysis. The only thing this doesn't like is it's odd speed which makes it slower than max speed base 100s...then again most don't do that or run Choice Scarf in which case it doesn't really matter. X-Scissor gets a boost from Download in case you accidentally get an attack boost and gets stab and it really hurts special defensive walls and Psychics. A Downloaded Life Orb X-scissor 2 hit koes Blissey though. Thunder 2 hit koes Nattorei and what exactly is Nattorei going to do to the bug? Thunderwave won't be fun but other than that it can't really do much. The jelly dies to Thunder with a Download boost but is 2 hit koed otherwise but it certainly can't wall you.
Geno has a lot of cool attacking special moves. If only he actually had physical ones other than X-Scissor to play with that are actually any good since Download is such a cool ability. Oddly, Thunder can kill no hp invested Shandera with a Download and Life Orb boost so unless Shandera is Choice Scarf or packing hp, you ko if you hit which after Claw Sharpen is nearly guaranteed.
Geno has a lot of cool attacking special moves. If only he actually had physical ones other than X-Scissor to play with that are actually any good since Download is such a cool ability. Oddly, Thunder can kill no hp invested Shandera with a Download and Life Orb boost so unless Shandera is Choice Scarf or packing hp, you ko if you hit which after Claw Sharpen is nearly guaranteed.