I'm not even sure two Hourglasses belong in the deck. Yeah, it's great when you turn 2 double-nova hourglass and actually roll a time quanta or three with towers (and it doesn't get destroyed!), but how much often does that really happen? And how much less often would it happen with 1? Playing a second is nearly verboten barring really unusual randomness, and often I find my self cutting off usage after ~4 turns anyway. Really, what's the point of having it if you can't use it? Dodging that triple yellow card draw has a lot of value.