Quote Originally Posted by nonsensei View Post
To be clear, their active effect is 30% elemental atk buff of the corresponding element & 30% dmg cut against the element the corresponding element is strong for 2t. Meaning that your dark kaiser would give you 30% dark elemental atk buff & 30% light dmg cut.
And according to Aken's spreadsheet, it goes up to 40% at 1-star and a whopping 50% at 3-star+. Not that any non-spacewhale will get past 1-Star.