how many cards in a cube mtg Introduction to My Powered Synergy – CG 2023's Most Popular Cube Cards

The bottle may be empty, but it should clearly be designed to hold something

That grows them over time, and then you can swing and then untap and grow and block

The rat kings inherent graveyard hate is supplemented by, again, Agathas Soul Cauldron, and we can also see The End being trialed as an answer to one-trick Atraxa decks

Too far behind on resources

Beyond that there are a large number of interesting synergistic cards in other areas and a few straight up powerful cards

The way this card handles countering spells in red is precisely how you would expect it to- by allowing the controller of the countered spell to cast a random spell instead