Help Lizardmen Monstrous Cavalry, I like the idea but I have no idea how to start

So I was talking with @eron12 and we came to the mutual conclusion that with the end of GW supporting 8th edition, this means the 8th edition community has more freedom to make house rules and get people to agree to them.

Anyway we got a rule. We can make new units but we have to have a model for it. One thing I'd always been intrigued with is Lizardmen Monstrous Cavalry. There are still more Age of Sigmar players, so I figure I could field them as "count as" for some kind of Order Monstrous Cavalry. In my fluff pieces, I created a beast called a Lurkerdon in fluff that Southland Skinks use as Monstrous Cavalry, but I never actually nailed down what they look like. I'm thinking crocodile like.

Anyway this is my rough draft for the stats but it's not set in stone

Skink Rider M6 WS3 BS3 S3 T2 W1 I4 A1 1Ld6
War Party Leader +1 A
Lurkerdon M6 WS3 BS0 S5 T4 W1 I3 W3 A3 Ld5
Unit Size 3+
50 points Each
War Party Leader: 10 points
Musician: 10 points
Standard Bearer: 10 points.
May take a magic Banner worth up to 50 points.
Shields, spears
Skinks: Coldblooded, Scaly Skin 6+ Aquatic
Lurkerdon: Fear, Swiftstride, Aquatic, Sea Creature, Predatory Fighter, Cold Blooded, +2 additional armor save to riders

I am not much of a from scratch-sculptor but I can convert a model.

Anyone know a good crocodile or dinosaur toy that is roughly the same size as a Juggernaut or Khorne or Empire Demigryphon?

I figure I could use it as a base, add some spikes, lenghten the claws, and slap on a saddle and then put a Skink or Saurus on it. I kind of view it as a Skink mount BUT I happen to have a LOT of unused of Saurus Cold One riders sans their Cold Ones.

 

Aren't Terradons considered MC?

Look at the model in @Crowsfoot's thread. That would be great for Skinks, seems a little bigger than normal Cold Ones.

http://www.lustria-online.com/threads/return-of-the-ancient-painter-scar-vet-on-cold-one-added.15934/page-39#post-180968

 

I meant to make three wounds

This is what I imagine a Lurkerdon looks like, maybe with stubbier legs, webbed toes, and a wider tail but I'll adapt to something different if there is an appropriate sized dinosaur or crocodile toy

Yes, but they are Monstrous Cavalry the way a Trogoldon is a terrifying monster. I wanted something powerful and hard hitting like Chicken Knights or Juggarnauts of Khorne. Terradons are basically flying Skink Skirmishers, no durability.