Acute Mind will increase this Combat Art's damage to incredible levels and reduce the Regeneration Time (does not effect Cooldown Time).
Typically anywhere from 2 to 3 totems can be constantly maintained, creating a rapid fire area of effect attack.
More totems can be kept going on screen if the Solid Bronze mod and the Expert Gold mod are taken, as it increases duration and decreases cooldown for the Combat Art.
The silver mod can be debatable, due to monster resistances to physical damage in the higher difficulty levels (Niob, etc.). Here Venomous would most likely be the better option, even though Pointed gives more overall damage.
Pros and Cons
Being a spell damage based Combat Art, it can take advantage of the Acute Mind boost to intelligence and therefore damage
Good attack for a lazy player's build as the totem auto-targets enemies within range
Has a relatively short cooldown, which can eventually be lessened with the correct mods
Hard to have more than 3 totems going at once
Rate of fire of a single totem is only medium speed
Player cannot choose which enemies they attack due to the auto-target nature of the Combat Art