Were-Creatures

Those born in the body of a human -- or in rare cases, their were-shape -- who walk the flesh of other creatures.

Overview
Were-Creatures (hereafter referred to as Shifters) are those who were either born or bitten, and given the cursed gift of walking two skins...

Universal Strengths
Enhanced physical power (able to lift 100lbs more than their body weight) in human shape (barring disease or other disabilities).

Enhanced sense of smell and hearing in human form.

Universal Weaknesses
Silver causes aggravation if it makes contact with the skin.

A Shifter who is in dire condition during their connected moon phase enters Moon-Blindness, where they cannot distinguish friend from foe and ultimately are prey to their own fight or flight instinct. Worst of all, however, is that Moon-Blind individuals always shift if able, and they always change to their most dangerous form to defend themselves, making the situation potentially lethal.

'''Shifters can only Change humans. All known attempts to Change other species have failed.'''

Birthed
Particularly lucky Shifters who are immune to the pain of changes. Birthed Shifters are the result of the biological reproduction of one Shifter, either with another Shifter or a human.

Bitten
Those who were, as it says on the tin, bitten to become Shifters.

Hybrid
The result of a Shifter coupling with a non-human species. Hybrids bear the unfortunate result of this: all Shifter outcrossings of this sort result in Hybrid Shifters, with each Hybrid having downsides and upsides depending on the other parent.

Shuck
If Bitten Shifters are unfortunate, Shucks are cursed, damned things. A Shuck is the rarest form of Shifter there is, given how they are created: Shucks are bitten numerous times and injected with potent amounts of venom, which has a high chance of lethality on its own. The Shuck is stricken by fever for days before they suffer a violent, agonizing transformation. Their shifted-shape is twisted, broken, with spines, scales, or other mutations and corruptions.