BUFF rules

Seeing as we're all working with percentages now. We have to put all the buffs in relative terms.
Here's what I have written up as a guideline for how buffs actually work:

Buffs need to be put in relative terms. A 100% D Rank buff of a D Rank spell could give it C Rank power, but a 100% D Rank buff of a B Rank spell won't turn it into an A Rank spell. Buffs become marginally less powerful as you apply them to stronger Spells or Stats.

To put it into perspective, take a look at the following list of examples:

100% D Rank buff
= 50% C Rank buff
= 25% B Rank buff
= 12.5% A Rank buff
= 6.25% S Rank buff
= 2.07% H Rank buff

or

100% B Rank buff
= 400% D Rank buff
= 200% C Rank buff
= 50% A Rank buff
= 25% S Rank buff
= 8.3% H Rank buff

or

100% H Rank buff
= 4800% D Rank buff
= 2400% C Rank buff
= 1200% B Rank buff
= 600% A Rank buff
= 300% S Rank buff

or

25% D Rank buff
= 12.5% C Rank buff
= 6.25% B Rank buff
= 3.07% A Rank buff
= 1.56% S Rank buff
= 0.53% H Rank buff


If you have a D Rank spell that doubles (or 100% boost of) a D Rank Spell or Stat, it will only increase a C Rank Spell or Stat by half, increase a B Rank Spell or Stat by a quarter, etc. This does not mean that all Buffs should boost by 100% (in most cases that would probably be too powerful), but this is the easiest example to give. Keep in mind that H rank = 3 x S rank