I guess Ral, Storm Conduit is a little annoying with that pinging effect
While giving your opponents a bunch of treasure tokens might not sound appetizing, just remember that you also get all of those Treasure tokens on your turn and can use them before any other player
Basically, the bigger the cube is, the less likely it is that a player in a given archetype will see the key cards they need
Im not saying they will be cheaper, or easier to get from folks who opened them, just that theres a bit more out there than you might be expecting
If you could also mill yourself with the additional four cards, or with the activated ability, it have ranked higher
This means that there are more commons than uncommons, and more uncommons than rares