Tzaangor Herd
The avian beastmen following the Changer of Ways. They come with several bound spells, but are poor melee combatants (for their cost anyways). While the Winds of Magic blow strongly they benefit from a decent ward save, allowing them to clear up weak units in melee with ease.

Khorngor Herd
Heavily Armoured and armed with two axes, Khorngors are infantry blenders. They benefit from frenzy and berserk, have high melee attack but only average melee defense. While they are not armour piercing, their high weapon strength allows them to deal a lot of damage even to heavily armoured troops.