Talk:Extermination Ninja, Slashing Asura/@comment-5397676-20140405235506/@comment-13275021-20140414081014

Kyureki, I just wanted to note that you can't pay the cost for Underworld, and grab the monster that came from the gauge, as the cost is paid at the same time you choose a monster.

It's different than Devil Advantage, because Devil Advantage has a cast cost that's paid before the ability ever resolves. In Underworld's case, the cost is part of the ability resolution. I hope that all makes sense...