So the core was Dugtrio and Naganadel which were mons I hadn't had a lot of experience building with so the team might not be the best. I added Mega Gyarados as the mega as it works well with Naganadel  help check some of its counters Dugtrio doesnt cover as well such Mamoswine and Mimikyu. I added as its another mon that works well on Naganadel, Gyarados builds to help revenge kill and block priority for the setup sweepers. I added Celesteela to give the team a good defensive check to fairies and Ferrothorn. The ev spread is kinda old and might be bad now but it lives 2 +1 Gyarados Waterfalls and 2 Mega Metagross Thunder Punches with the rest in Spd. For the last mon I added another setup sweeper than could benefit from trapping and help with some matchups that still felt a bit shaky like Ferrothorn and Celesteela.