I like the idea, I have one question though:
Does this effect work on monster skills too? Be kind of useful with a Rustler because you would be getting free quanta and regaining any quantas that you used.
Or does this skill only work with cards played, so that quanta used from skills is not regained.
All quanta consumed includes creature/permanents' skill cost.
Rustler, that's a good point. In my option, this card will make you regain all your
quanta consumed, providing free
quanta.
This will make
trio deck.
However rustler can be an exception. Rustler is the only exception for Shard of Readness.
(Currently Deja Vu has added to exception list, but it's little different)