raz is correct that tree isnt worth much on its own you need to mix it up with other tree's if you want to use.
Because flame fist is such a close casting skill you need a little bit more protection that any other caster so this is what
I would select as my build no doubt.
Max Flame Fist
Max Thermal Screen
Vengeance + other passive 4got name (maybe doesnt need maxed)
That is a lot of skills and points to spread out, so I would do some tests play around see what combinations work best in
pvp and pve. *If I was not going to take any skill here it might be Blind flash and instead Max out the passive for Lava field but Ive never attempted this build my self only seen other people use it. As for the Vengeance passives those will make
your DMG higher and Tick faster when active It might be ok to max that or what I norm do is just for the extra little boost make it 1/1.
Flame caster Hybrid will no doubt benefit a lot more when the lvl cap is 60 just dont go pure flame cast what ever you decide its not really good choice =P. So like I was saying at the top using the skill flame fist requires you to get a little closer
than any other pyro should be so you might want to stack some HP on gears im not sure if I would spend in Vit attribute
and instead get HP on gear and stack opals. If you manage to reach 30k HP with a pure Wisdom character thats 60KHP
when phoenix is active + thermal Screen then im sure you will be tuff to beat. I tested out Flame fist and without the
veng buff I managed to hit 8k Crit dmg tick, it is twice as strong as cinderwall.
PS: movement speed = win.