Bestiaire Faerique is a fantastic tome of monsters and encounters in the lands of Faerie made by folks at http://d100.fr/jeux/mythras/ It contains about 30 creatures from folklore, rules for faerie magic and several new creature abilities.
Here are the first few creatures from the bestiary added to Mythras Encounter Generator
Athach – the strong faerie
Aughiskey – the terrible watery horse
Banshee – the harbinger of doom
Baobhan Sith – a variation of a vampire
The creatures in original bestiaire have fixed character stats, I have modified them here to be varied, so you will get a bit different creature at each generation
You will find more about Mythras Encounter Generator here