I recommend this trilogy for when you finish Wheel of Time and The Silmarillion.
https://image.nostr.build/bcd368c11c9d03e2f43e58e7321311d663a974e322e43df81fe3a722f433107a.jpg
Lesser known fantasy with complex plot involving 2 complementary magic systems, a huge conspiracy, very powerful and smart antagonists, lengthy flashbacks and stories-within-stories...and time travel.
It's the author's first series and could have used a more stringent editor but the ride it takes you on is well worth a few minor flaws in the prose.