HoH:Nick Veto:TBD Noms:TBD Nightmare Power:Ovi, forces HOH to make new noms at night, lasts 6 weeks Chaos Power:Jack, he can stand and redo the veto picks. lasts until final 6 Camp Comeback:evictees stay in the house until battleback
but to answer the original question I think BB16 might've had 5 in a row? >Paola >Devin >Britney >Amber >Jocasta and then BB18 had Glenn->Jozea->Victor and Day'vonne->Zakiyah->Bridgette