I met this foe and I didn't get too close, then I throw a hydra at it, and realized it wasn't coming towards me, so I went on archon form and started punishing him with my pew pew laser beam, he still never came to me, and so he died.
What is the range of "awareness" of monsters, and what is the maximum range of ranged spells like placing a hydra somewhere, or the archon's beam power?
By the way the templar was hitting him while Leah just stood by my side.