HORNS

(not limited to just these examples)

Any horn type, of any rarity, can be any length, and have as many curves, notches, twists as is within reason.

Generally:

2 Horns=Common

3 Horns=Uncommon

4+ Horns=Rare

Mutations can include things such as boar-like tusks (curved upward), and combinations of different horn types.

Common horns include anything that resembles the horns/antlers of deer, elk, or moose.

They can be as long/short/curvy as is practical, and can have any number of points.

Uncommon horns include anything that resembles the horns/antlers of antelope species.

"Forehead", or "Unicorn-like" horns are also uncommon

Rare horns include those that are made out of something that isn't normal "horn material", such as wood/rock/crystal.

These also include horns that are/resemble plant growth.

Instead of horns, having longer fangs, "tusks", is also considered rare. It is impossible to have both tusks and horns.