Seeker is one of the better dps champs.

Where are you looking at progressing clan boss, dungeons, campaign farmer etc etc 

for me would be geomancer and seeker 

Geomancer buffs the team and seeker takes those buffs and turns it into massive damage.  Wish I had geomancer.

I'm working on getting my 4th 6* I currently have Kael, Aox, and Warmaiden 6*, I'll probably focus geomancer first and then seeker! Thanks guys!

that is really stupid to ask ppl here what to lvl up, no one knows what champs you have where you need help like on spider dragon, etc do you need turn meter boost from seeker geo for CB or vergis for scarab king, so what I wanna say is that just you know what you need,and don listen everyone  

seeker <> seer

Neither should be your 4th 6* though

Vergis is a beast.  I honestly havent looked at geomancer at all yet.   

if you can share your champs we might find someone else worth doing that you havent thought of yet, plenty of solid rares that do more work than epics and legos in cliche areas  etc