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These do not get added to the Standard rotation, and are legal in the eternal formats or non-rotating formats like Commander

Similarly, you may struggle to cast Blasphemous Edict for cheap if your opponents are playing around it, or not going wide

Marginal improvements are still improvements

My goal is to enable designers with a robust set of tools, that they might make an informed decision for themselves

This is why Robotics Prodigy is important as a way to force a bit more consistency, but without it you're banking on drawing into them

Breach the Multiverse will mill each player for 10 to load up the graveyards, then retrieve creatures and planeswalkers from each graveyard and put them right onto the battlefield