In a what, why and how fashion.
What:
A token that grants Blood Frenzy twice a day for Half-Orc characters.
Why:
Half-Orcs do not shine much in the way of mechanics. They take one bonus for two different stat penalties, with their only other bonus is natural dark vision. In 2nd edition of D&D, Half-Orcs received a natural rage ability as a result of their short tempered nature and brutish genetics, which was a nice feature.
How:
Upon character creation, when the character is being assigned its' loot, gold, skin, etc, this item is given if they are a Half-Orc. It is weightless, cannot be traded, sold or dropped, with a OOC notification of 'do not loot' in its' description.