Are they considered as a “magic circle”?
Cannot be captured by rogue, and cannot be affected by Reversi from thauma thurge. Owl laser is blocked by Oracle counterspell, but cannot be removed by counterspell. All statues are affected by Trapper conceal.
Nope, deployment skill.
Thanks @greyhiem and @flowerfell, I was contemplating whether it is beneficial to take miko on diev.