Regarding Anwen:
First, an elf can also have artifacts for initiative; you just need to find two rings + a dragon artifact. Second, the elf will have light, which means mass acceleration!
So, we should only be afraid of debuffs to attack damage, and we'll get luck through the Crown of the Ancients.
Light also has the magical perk "Storm Wind": (lol, spirits, vampires, and dragons are not happy).
I think the first few turns will still be dominated by units like crystal dragons, nymphs, and blades! (your Necropolis artifacts give us -1 to speed), but through leadership, attack, and artifacts, we will definitely run forward and hit everyone!
=>Example: I have 60-70 darks (you probably have around 150), they fly and hit the enemy with a luck spell = the damage is simply insane + prismatic breath can hit someone... Anwen can cause a lot of trouble with a critical hit!
