Although, there are meters in that way.

  • Rage/Overdrive = If the higher-tier rarity souls are fused with the same or better ones, the colored spectrum waves of light will wave forward in wavy way. The lower the tier of soul, then it will destabilize and relax, thus reducing usefulness of such abilities.
    • Example: Illaria Soul, Jeanne Soul, Priestess Of Amarantis = *Y% whopping gauge increase
  • - represents variable of numbers