It has the potential to destroy a ton of creatures on the battlefield, so long as they have equal toughness to each other
Shardless Agent has changed the format probably the most in enabling 2 entire archetypes, Living End and especially Temur Rhinos, being absolute top contenders in the format
And given the opportunity is likely to attract all kinds of Magic players, I asked Durward and Jza if they had any tips for folk who might be new to Cube that are hoping to win a Black Lotus of their own
My reasoning was that Mark Rosewater had explained difficulties designing straight four-color cards in the past, because there are too many colors fighting for representation, and you need to design around the missing color (what this four-color card isn't about)
Mana rocks like Chromatic Lantern and Chromatic Orrery also help you to get access to every color of mana
Making Cavern of Souls your source of creature spell mana protects you, as when they are cast using this mana, it also blocks them from being countered