Very nice. It helps low-cost decks of any element, it would probably be used with Nova (especially unupped) and might become the new Quantum Pillar for Antagon-like decks. If you have 4 of these in play when you cast a Graboid, not only you can play another one immediately, but you also GAIN quanta. It may be a bit powerful, but it is surely a nice card idea.
*thinks of a mono-time deck that casts Precognition to increase quanta*