-Catapult/Trebuchet do extra damage if the creature thrown is frozen. (not sure on the exact formula, but for example a frozen Pharaoh will deal more damage when thrown than a nonfrozen Pharaoh)
-Having Sanctuary prevents Silence from being used on you, even though silence doesn't modify quanta or hand
-Sanctuary prevents your Solar Shield and Dissipation Shield/Fields from working (the cards do actually say this if you read them very carefully, but it's not obvious at first, or at least wasn't to me)
-Marks (the cards won from tournaments) will make their own permanent piles, like pillars or pendulums. An -unupgraded- mark card that is the same as your deck mark will increase the multiplier of your mark by one, and will be indestructible. An -upgraded- mark card will make its own permanent pile, even if it matches your deck element mark.