What Pokemon and strategies are best against Ghetsis in Black/White 2?

Question

So, I have had a bit of trouble with the battle against Ghetsis. I need some help to defeat him, so please give me your best decisions, which will include Pokemon, items and nature.

Thanks for your convenience! :)

Comments

Not a full answer, but https://www.smogon.com/forums/threads/pokemon-black-2-and-white-2-in-game-tier-list-reboot.3705068/
Also his Seismitoad and Drapion should have the lowest attack stats, so it's probably easiest to set up on 1 of those 2.