I have noticed for a long time, that on my level 100 , that pip usage is odd. Sometimes, it will use power pips when spells should use regular pips instead.
For example: - I have 4 regular pips and 2 power pips. - I use blizzard which takes 4 pips to use. - The spell then takes the 2 power pips instead of the 4 regular pips - This makes battling for me very inefficient
Why does this happen to me, and am I the only one? On my level 63 , I have not noticed this problem at all........
Power pips take priority over normal pips when you use a spell of your school or the school you might have a mastery amulet for. It's always been that way.
For your school (or a school you have the mastery amulet of): It will use the power pips first, then the white pips. For the other schools: It will use the white pips first, then the power pips.
In your example you used with your Wizard. Try having your cast a NON and see what happens (If you have a mastery amulet, un-equip it first)
Your might not notice it because Tempest is a quite popular/useful spell. However it is a x-pip spell which means it uses all pips. (power and white)
Ok, I get all of this, but how come it won't use the white pips first? When there are four of them to save space?
Because it's less efficient. If you have 4 regular and 2 power pips. You can cast a 4 pip school spell and then a 5 pip off-school spell net round. If done your way, you could cast a 4 pip school spell but you'd only have 3 pips left for the next round.
, that pip usage is odd. Sometimes, it will use power pips when spells should use regular pips instead. 
, I have not noticed this problem at all........
