Talk:Past Oracle/@comment-5298730-20170204165946/@comment-16107481-20170204181436

They are all irrelevant to RUM's Oracle cards, besides being targets for them, if we put the TCG names in consideration.''

Other than that, Oracle of the Sun is a Goodwin card, Oracle of Zefra is a Zefra support, R-Genex Oracle is a Genex support, Oracle of the Herald is a Ritual Spell Card that runs something that could be run in the deck, Gravekeeper's Oracle is a card that supports Gravekeeper's, D/D/D Oracle King d'Arc (quite the irony that name) is a D/D support card, Musto, Oracle of Gusto is a Gusto support card, and Palladium Oracle Mahad is a Dark Magician support.

TL;DR there is not such an issue gameplay-wise.