No. I mean gargoyles. Bats are absolutely useless. The fact of the matter is that vampire lords have way more health, and can attack from a distance. As a werewolf, I had around half the health I have as a vampire lord. And as I said before, as long as I kept you stun locked, the werewolf summons are easy kills.
How do you stunlock someone with magic when they have 80% spell absorption or 70% magic resistance? Something a werewolf or vampire lord can have in the transformed state. The simple indisputable fact is that defending yourself from magic purley from perks and permanent active effects that are retained in VL or WW form is easier to do then armor.
Drain life is an AOE. So yes, I could.
Drain life does practically nothing to a high hp enemy and a werewolf would probably regenerate stanima faster then the spell can drain it.