This is probably my most unconventional build together with the Skeleton Spam Cocktail Defiler, which with 5000 views is absolutely legendary at this point!
If you don’t mind going against protocol and stuff all game mechanics in one single build, then here is another one for you in this genre (and this one is even stronger by 5 SR levels).
GAMEPLAY
First, spamcast devouring swarm on your enemies (heavily buffed with MI and relic), then move in your skeleton army (loaded with bleeding dots). Drop a totem behind your briarthorn, If the pets lose threat, facetank with savagery. Savagery is primarily used as a defense skill, so don’t use it to walk around and attack individual mobs, wait to get surrounded and spam siphon souls (it has greatly reduced cooldown). The build doesn’t use a movement skill, since it would just be too much buttons. In many cases the player character will be ignored and can keep spamming devouring swarm until the spectacle is over.
The build uses 9 skeletons and can respawn 7 per cast (quality over quantity worked better this time), the only other pets briarthorn and the marrow band hound.
This build has a lot of defense skills, but mark of torment and call of the grave are both one pointers, I use call of the grave to control behemoth proc, but on levels below SR75 this is probably not needed (especially not in softcore). Same is true for Mark of Torment which can be removed to simplify the build in campaign further.