looking to create an unkillable team, fully booked demytha. Having trouble creating a team that is actually unkillable, needing help with speed tuning and a TM control champ.

There are 15+ demytha tunes already figured out on deadwoodjedi.com . Chances are if you cant find one thay works there or the most recent Saph/HH elva one, the either you don't have the right accompanying champs or the speed thresholds are rediculously high.

There is a comp with demytha's A3 not fully booked and without seeker. In your case you might be able to build one around Elva and HK, but not sure, do your home work and try to figure it out