User blog comment:DeltaHorizon020/My Opinion About the Second Half of Stein's batch/@comment-2061246-20160815060716

If you look into Rayla more carefully, she's actually the most powerful debuffer in the game at the moment.

Debuffs and Spark Vulnerability are ailments that are often overlooked, but are essential in certain content as some bosses will cast buff wipes on your team. Debuffs and Spark Vulnerability are inflicted on your opponent, so any buff wipes on your own team will be wiped, but not the ailments you casted on the enemy.

Knowing that, her UBB is up to par with Sirius' UBB, and potentially better.

Comparing her UBB to Sirius' UBB, her debuff provides better mitigation, her BB Atk and Spark Vulnerability provides higher damage output, and her BB/Turn is on par with his BB/Turn. The only content you need to watch out for is HP percentage based attacks, as debuffs have no effect on fixed damage.

In a top tier OD team, you can maintain a constant UBB level Debuff and Spark Vulnerability on your enemy. So Rayla shouldn't be overlooked, because her SBB tends to make people think she's a nuker, but in fact, she's a powerful debuffer instead.