[renowner]

It seems that Youkai Evoke spells don't receive any boost from power from effects that boost the power of spells.
They're still considered spells, and they're still able to be stopped with silence, so this does seem like a bug, as nothing says that this should be the case anywhere in the game.

I've tested with cast order, and with pure power, and with evocation. (The Evoker passive)

This also applies to Needle, (Equipping and unequipping pure power while having nothing equipped didn't change the initial damage of the spell at all, nor the final damage against the prinny)
These are so far the only spells to have this issue that I've noticed. Even runes get the damage boost.

If I had to guess, its that it isnt applying to spells that don't take SWA into consideration? 
Needle even uses a casting implement, so it can't just be spells that don't use weapons.

Also the evocation passive of evoker doesn't seem to trigger at all, while you have no torso equipped, despite it supposedly supposed to count as going unarmored. It does specifically say 'unarmored torso item' but I think that's just what it normally is supposed to say?