User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-30924344-20180101234213/@comment-1359322-20180102031249

I don't think either 3 is correct. I know what it means but i can't remember the proper word for it.

And well 切り札 does mean trump card, it can also refer to ace card or wild card. Also no it's not Heavenly World, it's just Heaven.