Bounce can produce tempo a velocity advantage by making them spend time replaying a card. Super bounce, as I'm going to call it, gives you the same velocity then also produces a little bit more virtual card advantage by blanking a card in their hand for a turn. Most of the time that essentially just narrows their decision tree for a turn, which is a form of advantage, but a different kind of advantage, not more tempo velocity. Detain on the other hand, gives a smaller amount of velocity advantage than bounce since they don't spend resources getting it back. So I think in a vaccum Super bounce > Bounce > Detain, although Detain dodges things like ETB re-use so it can easily be more potent in an environ rampant with spells stapled to weenies.
On a more practical note, Reflector Mage is cool but not even remotely cool enough for my multicolor section just it does feel too much like a better version of something mono color has.
