mtg strixhaven all cards New spoilers include some shockingly unplayable 10 Best Cards in Secrets

A few other things

He asked the judge if he could take it back

However, if you do, and that card is an illegal target at the time the ability tries to resolve, it won't resolve and none of its effects will happen

New Text : Whenever Ruxa, Patient Professor enters the battlefield or attacks, return target creature card with no abilities from your graveyard to your hand

Unlike other options like Liliana, Dreadhorde General, and Null Profusion, you are likelier to find this in Constructed formats

Even though Rest in Peace is modifying what happens to those cards, you can still at least try to move the cards and thats all that the Processor cares about.