I ran a BM Support Necromancer with a 4 L SRS in Prophecy league , and I was able to solo up to T 10 without issue , though my map pool never got big enough to try much higher . I did party play up to T 15 and it was also pretty smooth sailing . I did make a video about it a few months back going over most of the build D 4 AnwXasC 6 UFor breach I ' m planning a Blade Flurry Scourge Necromancer using an almost identical skilltree , and while not really a summoner per se , you still end up with 1520 powerful wolf minions following you around during most solo content . For a hardcore league , however , there is the very likely possibility that running a necromancer in a group will probably lead to any nonchaos builds dying to reflect when they normally wouldn ' t , as a necro support can buff your damage as much as 5 x , as you ' ll hear in the intro to the video above .