>>20960118For one, you could add in Paralysis for an extra 25% chance to do nothing. And a Serene Grace flinch.
Second you can't reduce accuracy on an OHKO move so use Zap Cannon, the next lowest at 50%.
You also have a slight misunderstanding of evasion mechanics: accuracy and evasion run off the same counter.
If you're at +6 evasion, lowering my accuracy won't do anything. It's capped at a 0.33% multiplier.
There's also brightpowder+Sand Veil, and Hustle, but I don't know if those are calculated separately or not.
Without the last part you get
(Paralysis)*(Flinch)*(Confusion)*(Attraction)*(Base Accuracy)*(Evasion)
which is
0.75*0.4*0.5*0.5*0.5*0.33~1.2% chance to hit.
If you add in the other modifiers, you get an extra 0.9*0.8*0.8, which leaves you with a 0.7% chance to hit.
I may have fucked up somewhere. Don't hold me to any of that.