[quote=@knighthawk]
and a boost to 15 for 3 points, not to mention he can stack stoneskin multiple times so he can do 4 armored over 4 rounds for 30 Defense... Hmm...
[/quote]
A Defence boost of 5 for 3 Energy, which only lasts for 3 turns and so could be used to give a maximum boost of 15 for 9 Energy and then maintained at that level for a fourth turn before Brick wouldn't have enough Energy to activate it again. And during all those rounds he'd ne using up his action, so wouldn't be able to attack or do any other tricksy mcguffining.

[quote=@knighthawk]
I assume that later someone can spend points to increase duration of their abilities as well for 1 round for 1-2 points?
[/quote]
It's a 2 Point upgrade to increase the duration of a status effect for 1 turn, yes.

[quote=@KabenSaal]
Bwuhahaha! I have returned!
[/quote]
Flare! Kill it with fire!