Board Thread:Questions and Answers/@comment-26257973-20150530215930/@comment-25209037-20150531043055

Its still a good buff though. Elemental buffs main competitor in damage modifiers is spark buffers, the problem is that the former is rare and the latter requires your units to spark well, that means having units that either have a lot of hit counts (20+) or very low so it will be easy to spark (Dilma, Mifune, Hogar, Mariudeth).

Elemental buffs ensure that you deal x2 damage to enemies. x3.25 if you fulfill Kira's/Maxwell's LS req.

Spark buffs increase your hit damage by x1.25, this is why dual Rosetta leads + Claire/Elza/F&F is a great lead/sub combo, Rosetta's 75% spark damage buff on LS stacks with spark buffs on BB/SBB, with her as a lead, you get x2 increase when hits spark and dual Rosetta makes that x2.75, which can be increased to x3.55 or 3.45. Also, there are items that increase spark damage as well, like Batootha, Steeple Rose, etc, so this is further increased.