Here's a Saurus preview pic to wet your whistles/pants/lizards.
Not 100% finished but nearly.
I decided to give all obsinite weapons the magic tag and +1 att to make up for the underwhelming saurus attack stat I'm going with. Thus the Obsinite sword is 1 att 0 def len 3 dmg 7. Pretty nice piece of kit. The obsinite spear is len 4 att 1 def 0 dmg 4 and costs less in resources.