Is Shockwave totem a spell skill?
Shockwave Totem is a spell skill. It summons a totem that releases shockwaves that deal physical damage around it. The damage done by Shockwave Totem is Spell, AoE, Totem and Physical damage, so modifiers to any of these will increase it.
Are there any good DPS nodes for totems?
There are lots of good nodes out there, feel free to tweak them to your liking. Also note that the DPS displayed in PoB is for just one totem, so since we run 4 totems you should multiply it by 4. This DPS is constant, no temporary buffs like flasks. This is mandatory for fast mapping, as it turns the awkward totems into killing machines.
How do totems work in es?
The totems target enemies really far away, you can just place 2 totems and sprint forward to clear everything nearby. 4) Hierophant is the obvious choice because of totem scaling, mana reservation and mana to ES.