User blog comment:HQDominator/Highest Spark Damage Possible in Brave Frontier Global/@comment-2061246-20160429203819/@comment-2061246-20160429214524

From what I've been reading online, selfish Spark buffs don't stack with Team Spark buffs.

Note that I didn't add Eze's UBB Spark buff with Ravenna's UBB Spark buff.