Temtem In-Depth Competitive Guides Ep. 3 - Nagaise 

Best creator, thanks for the vid!!!!

This one didn't age well :/ Naga with Deceit Aura is a best of one menace now, but it really suffers from its many weaknesses, because toxics and Electrics (Gazuma, Hazrat, Nid, etc) are very prevalent and the current trait and moveset is too weak to compensate for that. I think the current best build on DA-Naga is Humiliating slap built around Crystals and with Fatburner to ensure, that you are faster than most Pocus, Golzy, Gazuma and Hazrat-Matchups. It pairs well with Tuvine, Turoc (make it faster than Innki/Golzy with Stoneball under DA), Chim and other physical crystals. Water Custodian is still the same. It has a better peak, when it gets value, but it's basically unplayable vs Aggro (Oceara spread denies Vulcrane/Drakash leads, Plat is still good against it and many many Gazumas). You always want to survive 1 Wastewater + the toxic Tick, because you'll often find yourself trading hits.