Talk:Evil Deity of Cataclysm, Hyakugan Yamigedo "Sky Half"/@comment-16118869-20160327113000/@comment-25600444-20160327114423

Oh. That too.

For example, Purgatory Knights, despite being Armordragons, are DDW cards. So if you run them in a Deck using the Dragon World Flag, they lose the Armordragon status as they are now blank cards.

It's that kind of thing. Blank Cards can be used for costs in the sense of a physical card but for specific atributes required by other cards like Attribute, Size etc., no they cannot.