Increase totem placement speed "VS" cast speed

Hello



How i understand it: placement speed allow us quickly installs totems on the ground.
What is cast speed????

I Channell blameblast circles by totems

Does totem initiate quick start of circle growing or circle growing will be fast?????

Like for energy shield - There are recharge rate and faster start....

Is this amulet useful for totems an aspect of the previous question????

Thanks

Placement speed = The time it take you to put down a totem.
Casting speed = Time it take your totem to cast a spell
(In case your totem does cast a spell and not doing an attack)

Channel speed with case rate usually result in faster damage tick / faster stage building (Flameblast for exemple)