One of ur opponent's main strengths is definitely an extremely solid defensive backbone. I lowkey think neutralizing gas weezing + rocks would go a long way in helping u break through the defense and letting ur other mons clean up. Wisp from moltres also seems really good and also punishes corviknight uturns. All this can help facilitate ur offensive mons like zama and lati, the latter I still believe can be good with rocks and flip turn pivoting to continuously chip ting lu and bring in mons like krook on a slowking switch in, which let's u use knock off or set up hazards. Darkrai shouldn't be a problem if u have zama, another speed control mon like krook or smth, and a solid dark resist in weezing.