AoS What should I get next?

[Twinner]

Hey guys, I just got into Lizardmen (Seraphon) for AoS. This is what I got, hat should I get next? I would like to play competitively and casually so advice for both would be awesome.

60 skinks + 2 skink priests and 1 skink chief
40 saurus warriors + 1 saurus leader
20 temple guard
1 slann mage-priest
8 cold one riders
5 terradon riders
3 kroxigor
3 razordon hunting packs
1 stegadon
1 Engine of the Gods stegadon
Kroq-Gar on Carnodon
Saurus eternity warden
1 bastliadon (magnetized)

Thank in advance.

 

[Aginor]

Welcome!
Well, it depends a bit which way you want to choose.
I'd probably go for another Start Collecting box. That will allow you to try out a Firelance (you would convert one Knight to a Scar Veteran on Cold one), another Carnosaur to use in a Bloodclaw, and some additional warriors.
So that's a great deal if you want to expand the Saurus side. You could also get a Sunblood for that.

If you want to go Skink heavy:
Get a Starpriest and /or some Rippers.

Lots of combinations - including some strong lists - possible with what you have. If you add just a few more models for synergy.
You can already play Shadowstrike, Eternal Starhost and Thunderquake and you do have a Slann, which is good.