User blog comment:Linathan/Unit Spotlight: Calamity Steel Chrome/@comment-26808675-20160113135406/@comment-26140304-20160113214418

Spark buffs don't stack with each other if you're using Chrome and Zedus. In terms of raising units, you should make an effort to raise all of the units you have. There may be some cases where you have to use Chrome in case you have to make a team that bypasses BC drop resistance, etc.