> . If you play a Workshop using Overlord, it can gain itself (and move to your discard pile). If you play a Graverobber or Rogue using Necromancer from the trash pile, it can also gain itself (and move).
This has nothing to do with anything I've said, but okay?
Sounded like you were saying that "leaving it there" prevented it from being moved; but seems like we both misinterpreted you on that part.
Fairly certain you are both wrong here. As I mentioned IIRC Experiment/Encampment did move themselves before the "leaving it there" text was added, so it seems clear to me that it's what's keeping things set aside. Prince's most recent change is what made it work with Horse for instance, so yeah.
What do you mean by Experiment moved itself? Do you mean if it were played with old Inheritance? Or if it were played with old Band of Misfits? In those cases no actual Experiment card was involved in playing "Experiment", you were only playing an Estate or Band of Misfits. If you mean new Inheritance, there wasn't ever a version that played the set-aside card but didn't say "leaving it there".
*Edit* I see from your last reply that you mean old Prince, not old Inheritance. So rather than a new reply: Old Prince played the card normally, so it was in-play. Experiment could return to its pile because it was in-play where it expected itself to be. New Prince prevents Experiment from being moved to in-play, so when Experiment gets to "return this to the supply", it looks for itself in the in-play area and can't find it, so it can't move.
So yes, "leaving it there" does indirectly prevent Experiment from being returned to its pile. But not because "leaving it there" means "don't move it anywhere". Because it means "don't move it into play", along with the fact that stop-moving rule says that if the card isn't in play, it can't be moved.
One more edit.. the point of the Workshop example was that if "leaving it there" prevented Experiment from being returned to the supply pile when it were played with new Prince, then why wouldn't "leaving it there" also prevent Workshop from being moved to your discard pile when Workshop was played with new Prince? The difference is that "gain a card" looks for the card in the supply, while "return this to the supply pile" looks for the card in the in-play area.