Originally Posted by aphidsc

With regards to synergies, does anyone know if similar abilities stack? Such as Cactace's [Battle] +30% Shine Crystal drop rate for Squad members and Bipinna Cosmos's [Battle] +15% Shine Crystal drop rate for Squad members, or say two girls with 20% and 10% dmg to solar blast.

As mentioned by others, yes they stack. Notably, some abilities do stack more than others.........When it comes to Attack/Defense abilities, those ones are straight forward and add right on top of each other. It's a little bit different for Solar Power boosts though.

Solar Power boosts use 100% as your starting point, and continue to multiply on top of each other. So say for instance, we had 5 Lavenders on a team, the power would multiply by +20% five times (100% x 1.2^5 = 248%).

Even crazier, Skill Rate activation boosts, similar to Attack/Defense, also directly stack on each other, but not in percentage form, such as (1.2 = 20% -> 20% + 20% = 40% = 1.4), but rather (1.2 +1.2 = 2.4 = 140%). So in essence, by stacking Tachibana and Moonvine, you're more than doubling your Skill Rate on the third turn of battle. That is unless, the Dev.Team just made another mistake in their codes and created this horrible typo here.