Talk:High Vampire/@comment-58.182.118.7-20150126122930/@comment-25151790-20150127204641

Let's take Polaris' skill as an example: All allies' ATK 200% up

This means to multiply your attack by 2 and add the result to your original attack, so it's effectively a 3x multiplier.

If you had two of these skills activate, their boosts would multiply with each other. You would get a 9x attack boost (3 x 3 = 9).

For debuffs, let's use Penemue's skill: All enemies' ATK 25% down

This means to multiply the enemy's attack by 0.25 and subtract the result from their original attack, which gets you a 0.75x multiplier (1 - 0.25).

Penemue's skill can activate up to three times. The first activation would reduce the enemy to 0.75 of its original attack, the second to ~0.56 (0.75 x 0.75), and the third to ~0.42 (0.75 x 0.75 x 0.75).