I think some redundancy of the effect would be sweet. Schafkurai mentioned Jace, Wielder of Mysteries and that is a good one. There is also Nexus of Fate which is less obvious, but a lot of fun (by my standards) to optimize.What conditions and other cards would I need for it to be interesting an fun?
For the Oracle to shine, I'd be looking at a mix of one-shot and repeatable self-mill enablers
A bunch of ways to recur it in case it hits the GY
Other GY matters payoffs to signal that a coherent deck is supported
There are other, more spicy ways to win
Artifact draw 7
Paradox Engine combo
One card engines (that you don't want, I know!)
Storm (tame version)
And a bunch more. Fun card, highly recommend!