I think that this card is a bit overpowered. I mean, consider the unupped: Fire shield costs 6
, and deals 1 damage to attacking creatures. This card costs just one more than that price and also gives its owner a quantum each turn. Comparing this quantum-generating aspect of the card to the only current shield which produces quanta, the solar shield costs 3
, reduces damage by 1, and converts damage into
. This shield actually harms creatures who attack AND creates quanta. I would suggest lifting the price to 8 on both of them, just because I don't think that this shield should only cost 1 additional quantum in comparison with the fire shield.