The best combo I can see with this card is Gravity Shield + Fire Buckler. Creatures with more than 5hp won't attack you, and others will die in at most 5 turns. Of course, you have to make sure that the Gravity shield comes first. Other nice combos are Thorn Carapace (first) + Bone wall (creatures with 1atk won't damage the wall, those with more will die and fuel it), or Titanium shield + Titanium shield. But of course, best shield como evar would be Prismatic Wall + Prismatic Wall (
http://elementscommunity.org/forum/index.php/topic,14213.0.html) 8)
I don't understand the reason of the "Drain all earth quanta" effect. On cards where it is present, it prevents repeated use (just imagine playing 2 sky blitz in the same turns... Your airborne creatures would get x4 atk). On Fractal it also makes fractalling Phase Recluse much harder. But on this card it has no reason to be ; maybe an upkeep cost
à la flooding would be more adequate.