Emissary of Thule - random summon level?

[Troxx]

As this pet costs a peridot to cast, just trying to get a feel for this pet. Is there a level range or is it always a static summon level like mage epic. If a range is there, how tight is it from max hit range?

With the other 50s pets it's not terribly painful to chain summon for a good one.