So what you are saying is that Bolt Magic mastery's 20% is overuled if Ice Magic mastery has more mana cost reduction?
I'll just like to know where you got that information and if you tested it out yourself in a server that has G13?
Also I never played, researched or even looked at maplestory. I don't see the point of your comment unless ya taking for granted I'm been influenced by that game somehow?
Also to the other person before.
Wiki has called Fireball/Thunder/Ice Spear to be Advance magic for a long time which was wrong from the begining.
Even NA Mabinogi game call Escra from G2 as "He" which is a translation error in most case.
You can't take for granted how things are writen ingame.. but simply how they work. Test it out yourself if you don't beleive "Cost" type Mana Reduction and "Consuption" type mana reduction. I personnaly got that theory from one of Justified's post I found while researching this multiplicative theory of yours and tested it to see if it did work.
Last detail. I use the word "Witch" because I can't use "Mage". If I claim to be a mage on a forum, I get this "a person who drink mana potion" labled forced on me. Honestly it piss me off. I made a Self-Mana Suffisant magic user that doesn't need mana potions. If I can't call myself a mage, I might as well use a different "Magic user" related name instead. Which is why I took Witch. Ice Spear never exceeded my mana pool. If used wisely, inter magic are never mana costy and will not require you to drinik mana potions. Of course if ya just the type to spam it left and right, of course you'll end up wasting all your mana.
So you are telling me you can run a whole SCC HM and not use 1 pot.