My own Irish unicorn. Ailiofa Diúir; roughly a much of words that mean "elf holy soldier."
This creature is a true unicorn, possessing but a single horn that often fools people into thing they have multiple. Their horn is like a halo, circular and atop their head. Moss grows upon their horn, and their hair ['beard' and 'tail']
Ailiofa Diúir are one of the few creatures that can interact with the elven and fairy world. They are holy animals, possessing the power to kill any creature that strays from their path or interferes with the Unicorn.
The Unicorn possesses a marking of Trinity; Creator, Destroyer, Sustainer