Board Thread:Question and Answer/@comment-29547733-20161123105452/@comment-29349735-20161123115512

Well, the idea of Celestial Oracle is that it's a bonus to whatever card you're summoning for. So if you toss $600 to get LR wise oracles and get nothing, well, at least you get a Celestial Oracle for your trouble. A lot of us who aimed for her spread out our summons across multiple events, so you might get a 650% buffer, a 10x hitter, two dark unleashers (Mormo), and a few tries at LR Oracle in addition to the 2.3k needed for the Celestial Oracle.

It is stupidly expensive, though, so if you're summoning just for Celestial Oracle and nothing else, it's definitely not worth it.