Light needs something like this in any case, or at least something that can take advantage of the fact that there are tons of ways to generate
quanta. Right now, all that generation is mostly useless since there's no benefit. Perhaps a shield that gains 1 defense every 10
or a creature that gains 1 extra attack every 10
.
On topic: Balance aside, this would definitely give light some more teeth. The only thing light can truly call as their own deck is healing stall, and that's lame.