I totally understand the recommendation and do want to have a visual guide done soon, but right now I'm swamped with work and other things so I cannot possibly get it done - I do want to get it done though, one day!
In the mean time you can ask me or in the FAQ journal anything you want, I'll be glad to answer
Triple horns aren't allowed, two horns are a common trait and unicorn horn is a special add on!
There is no rarity for technoctem traits as they're defined by trait tier (special, ultra and exclusive)!