User blog comment:Linathan/Unit Spotlight: Ice Bastion Zeldeus/@comment-26297531-20150828221152

It seems tho that currently for Global, only the UBB mitigation stacks multiplicatively.. (re: your comments in the LS section)

https://www.reddit.com/r/bravefrontier/comments/3inm32/current_state_of_mitigation_in_global/