Condi damage/power
What do you want to do in the game?
This hybrid build works pretty well in wvw roaming, general pve, and pvp: https://forum-en.gw2archive.eu/forum/professions/necromancer/Build-Staff-Corruption
I haven’t seen any other truly functional hybrid builds.
You can run the standard condition terrormancer spec with carrion gear (particularly useful in pvp), but in pve or wvw the dire set is just better in most situations.
For that build I’m looking to do general PvE and dungeons.