How would this screw rainbows up? All they have is Quantum pillars and the mark of Time/Entropy. The most you could do is turn like 12 quanta into Time/Entropy, and cautious players would start taking some Entropy-heavy cards, or something. Casting on a Qpillar just scrambles, and this isn't very strong.
This would more of screw up marksplashers or help you get good amount of marksplash or something... it's more of a self-help. You could Nova-Assemble-Highcostcard, for example, as you get 12 quanta of one select element you are using anyway.