Talk:Doombringer Azurai/@comment-29027125-20161113235238/@comment-27076522-20161115195126

Not really, Elza covers his important role of spark damage and brings heal over time, BB over time, ailments, and a bit of a spark blanket too.

The same buffs from a BB or SBB don't stack except in rare circumstances. For instance, Elza's spark buff and Eze's spark buff won't stack, but Elza's spark buff and a spark buff from a leader skill will stack. Some buffs that do stack are self-buffs - such as Shura, for instance. The buffs he gives to himself are stackable with normal buffs of the same type.

Also, stuff like ATK/DEF buff for light types does stack with normal ATK/DEF.

And HP buff doesn't stack, but it's always the highest buff you've cast - if you cast a 25% HP buff and then a 10% HP buff, your unit's max HP will be buffed by 25% and no higher.