My current impression is that Psychic Frog is more likely to be too strong for a given Cube than too weak
The first round of rebalanced cards primarily focused on nerfs, but there will be consideration for buffing a wide array of cards from various strategies or buffing multiple cards in a single strategy in future releases
Goblin Haberdasher somehow makes it so that your creatures that are seen wearing a hat get Menace, a very useful ability that forces players to assign at least two creatures to defend against an attacking hat-wearer if they want to avoid damage
There are only 500 copies of each card, making a serialized card a pretty rare collectible version of whatever card you find
When this creature becomes untapped or you lose control of this creature, exile that creature
Gandalf, Friend of the Shire Gandalf, Friend of the Shire gives you the flexibility to cast sorcery spells at instant speed, which can be a good advantage