I was thinking that a FFQ and a Rustler and a bunch of life pillars could generate way more quanta per turn (in a single color). But then I realized that would be a ton of clicking, and that it's easier just to draw, play, rewind, repeat. It's quanta/time, not quanta/turn that counts.
So, unfortunately, not a very interesting challenge. Who can stand to draw, cast, rewind, repeat the longest?
