[Discussion] Arkana level 40

How do you guys farm Arkana level 40? I think I tried everything. I tried Lab builder with and without d gate, I tried Elements unite, I tried unhappy girl, everything seems to fail...

I tried basically every deck listed here but cerberus (that doesn't seem very consistent anyway): http://duellinks.gamea.co/c/50jwbs3g

Some of the decks I don't have all the exact cards, but I just swap for different draw enginges, yet I can't farm a single game.

Elements united: I tried 3 or 4 slightly different version every times, all failed, I summon GG on turn 1, he summons DM on turn 1 or 2 and simply kill my GG before I can draw ready for intercepting (and the only time I did he had the spell to clear backrow and then knife my GG).

Unhappy girl: I used last day of witch to clear spellcasters last turn so he can't destroy my special summons, but he had a wand equipped so he simply special summoned a DM back after I killed it and then proceed to destroy my BEUD with Dark Renewal.

Lab builder: simply coudn't find a good setup of card to defend lab long enoug.

I was thinking about running Elements unite with 3 Ready for intercept, 3 Champion vigilance and just draw engine, but I don't think I can draw faster then he does while I clear his monsters.