I think DISCORD is the one who needs balancing, it just ruins badly mono-elemental decks and it also messes up rainbow decks. Too much luck involved and 4 damage at the same time, seriously?
PANDEMONIUM is not exaclty overpowered, but it is too luck-based and it can just harm you instead of opponent or, quite the opposite, eliminate an almost unbeatable enemy army of powerful creatures.
HOPE is also overpowered. Just spam light emmiting creatures and the opponent can't even touch you.
I said pandemonium is NOT exactly overpowered, but it is TOO MUCH luck based, so I really thing it needs a little fixing.
Discord is really overpowered, because it ruins your quantum supply a lot AND dealing damage at the same time.
Hope is one of the most broken shields in the game. Let's take a look to the text of Elements Wiki:
"What shield has such ludicrously strong defensive power that it can block up to 23 damage from every single attack? Hope is such a shield. Its defensive power is equal to the number of light-emitting creatures you control at the end of each turn, making it potentially the most powerful shield in the game. This card is immune to permanent destruction, too, and in some situations it can render you completely invulnerable." Guys, it is sooo easy to have many light emmiting creatures in game. If you have, let's say, just 3 such creatures, Hope becomes a "block the first 3 damage every turn", which is rediculous for a permanent shield. And what if there are 4,5,6,7... such creatures? Most of the other shields must be upgraded to block 2 damage per turn instead of one or they block creatures by chance (like Fog Shield), but Hope
always and
permanently blocks such a huge amount of damage every turn. Those guys who don't complain about it are those who either have Steal or cards which can destroy opponent creatures, what about the rest players?