Board Thread:Fun and Games/@comment-25856498-20161204060422/@comment-28478783-20170121073342

Great way to reuse a challenge Supercell. Just change the name! An all-common, all-rare, all-epic, all-legendary challenge might be great, but Supercell would need to release more legendary cards to keep the all-legendary challenge engaging.

Anyways, you can always select counter cards in the "draft" challenge. That way, you can accidentally mess up your deck when your opponent gives you 2 spell cards and you chose three vital spell counter cards, leaving you with three weak troop cards...