Code: Ultimate and MP Cost reduction in PvP

So... I was trying a MP Cost reduction build on my Code: Ultimate just for fun and I managed to reach a base of -34% MP Cost in PvP.

I looked at 2 different 100 MP skills: Hornet Sting and Illusion Thorns and...

I noticed that I can cast Hornet Sting whenever I reach 66 MP (aka 100-34 = 66), and that's ok, but... To cast Illusion Thorns I need to reach at least 82 MP... Why only 18 MP less than 100?

When I cast those skill, both of them will consume 66/65 MP, and that's right, its the amount required to cast it that doesn't fit.

Let's suppose that the Reinforced Nasod Weapon passive overwrites my base "-34%" with its "-20% MP Cost on all Nasod Spear skills"... Even in this case, why 82 MP and not 80?

Can someone enlighten me on how does the MP Cost reduction work on Nasod Spear skills?

Well, this "doubt" has come to an end.

Apparently, even if in the PvP stat page it's written "MP Cost Reduction: 35%", some kind of normalization occurs.

Playing with passives and attributes that further decrease the MP Cost lured me away from the correct answer...

I tried casting Queen's Throne (Base cost 180 MP), which doesn't have any kind of MP Cost reduction from selectable attributes or passives, it turns out that...

• In Dungeon I can cast it for 117 MP and it will use all those 117 (35% of 180 is 63, 180 - 63 = 117)
• In PvP it will ask me for 147~ MP and will use them all even in this case (18% of 180 is 32.4, 180 - 32.4 = 147.6)

Long story short, that 35% is actually an 18% MP Cost Reduction in PvP, while in Dungeon it would work as intended.

It's clear to me, this post can be closed.