These really aren't very hard to counter at all, decent rushes will win most of the time due to them getting damage out before you can do much of anything.
30 pillars is also way to many even for fatty rainbows. And only 2 cards that really stop rushes at all, which fall flat against ones with even a little control.
OK, way too much pillars, but I want to play a light dragon, belive me, it's balanced in silver
you forgot the quakes and tears, while not directly, really slow down the oponent. You can always change it mantaining the quanta balance.
Also, consider that I use pillars, not towers