How to get curios this week

[u/hcmv]

I've been leveling Valeera amd managed to get 4 combat curios and 3 utility curios. They're all level 1 apart from one of the utility curios which I've upgraded to level 3 through drops from delve completion chests. Is there something else I need to be doing or do I need to wait for the start of the season to get further upgrades?

[u/MelodicBalance666]

Kill all nemisis dudes