Board Thread:Update Suggestions/@comment-25322827-20160329132141/@comment-27701661-20160406155602

I think 1 second will be fine so your opponent gets a brief moment to plan about it. And you can't bring it out too late.

How about you change the theme to something like 'shield generator' (magic kind, not BB) and make it more expensive with decent duration but low-medium hitpoints.