Well that depends. My mana bonds aren't the strongest right now. For now I think I could make two that are about your size. Or one that's about twelve feet tall. Or a little pack of imps. Maybe a human sized one and some imps. I can manage a phoenix or a spitfire as well, but that'd knock me on my butt for an hour or two.

In time, once I've gotten more used to the world that could increase though. Maybe a month or two. I'm working from scratch here, really, and conjuring takes a lot of mana to get right. Working straight evocation is much, much easier.