On loops you get the modifier that locks you to 15 card plays (I assume velvet choker will have the same issue, but it has not been tested). If your 15th card played happens to be Specialized Circuitry you cannot play the selector card or end your turn.
As a suggestion you could make it function like a card potion, and make it a zero cost exhaust card that will automatically trigger at the end of the turn if you don't play it manually similar to the way burns and certain curses trigger. That way if you are card limited you will still get the effect at the end of the turn, but if you plan on playing orb generators afterwards you can manually play it to get the effect beforehand.
On loops you get the modifier that locks you to 15 card plays (I assume velvet choker will have the same issue, but it has not been tested). If your 15th card played happens to be Specialized Circuitry you cannot play the selector card or end your turn.
As a suggestion you could make it function like a card potion, and make it a zero cost exhaust card that will automatically trigger at the end of the turn if you don't play it manually similar to the way burns and certain curses trigger. That way if you are card limited you will still get the effect at the end of the turn, but if you plan on playing orb generators afterwards you can manually play it to get the effect beforehand.