Rectiifier is the one-shot targeting spell. It targets a creature/permanent, and the player affected is taken to be the owner of that target.
Rectifier bridge is an unobtainable permanent with an each-turn active effect, generated using rectifier.
Previous experience with effect amplifier type cards indicate that they should be costed much less than what they typically give back. Having to dig all parts of the combo up from the deck and play them is surprisingly expensive. And here, the combo is rather fragile, as it suffers greatly from quantum denial, permanent control, or just moderately lopsided draws which most other decks can just shrug off at just a tempo loss.
Similarly, denial should cost much less than what it typically denies the opponent. Here, the denial is useless if the opponent runs a mono deck, and cannot be used for denial hardlocks, as rectifier bridges will stop working permanently if they try to convert when the opponent's quanta is already monoized. Besides, the effect is to funnel quanta towards an element which in most cases is one that the opponent can spend, even if just a bit.