Spirit question

I think I missed something.

My character has 145 spirit.
I use Herald of Thunder (30 spirit)
Wind of Dancer and Clarity (30+10 = 40 spirit)

I want to use Cast on Shock for 60 spirit but it doesn't allow it because I do not have enough spirit. I checked all my other gems and cannot find any other spirit use. What do I miss?

It would be nice if GGG would develop a mouse-over on the spirit value of your character so you can see what your spirit consumption is.

Okay, already figured it out.
It wasn't that I didn't have enough spirir. I just had to put a speel in as support to make it work.

GGG has to change the error text, because without a support spell it says that I do not have enough spirit to use it.