You will not evade me, $name

[Skope]

I remember that in seb only certain mobs would summon, regardless of level. The same was true for CoM if i recall correctly.

I remember being able to slow and snare a guardian wurm without them summoning, but as soon as they were damaged they would start to summon those according to who's on top of the hate-list (usually my shammy-slow would do it). But there was also quite a few mobs in that zone that didn't summon and were over level 51, some over 55. Think it was really dependant on the mob