Does Tameshi, Reality Architect's X⚪️ allow you to circumvent (sirsumvrent?) targeting restrictions with an aura, such as hexproof/shroud, protection, etc? On a larger scale, could this allow an aura to attach to the "wrong kind" of permanent?
When an aura enters the battlefield and it wasn't cast, and if there's nothing saying where it attaches in the effect that's bringing it onto the battlefield, then its controller chooses what it enters the battlefield attached to. It has to be able to legally enchant that permanent as per its enchant ability, and it has to be able to become attached to that permanent, so it can't get around protection. It doesn't care about shroud or hexproof, though, since an aura only targets when it's on the stack.
For example, if you bring back Arrest with Tameshi's ability, you couldn't attach it to Tibalt or Black Knight, but you could attach it to Nimble Mongoose.
