Remember that you can only attach one energy card every turn, so some powerful moves requiring more Energy cards may take multiple turns before you can use them
For the same reason, I think that makes it harder for old fans of the show/card game to get back into it
By the way, if your opponent controls a Sundial of the Infinite and you have an artifact removal in your sleeve, such as Krosan Grip, you cant remove Sundial of the Infinite before your opponent activates its ability, as long as your opponent is cunning and smart
On Theros, the dove is a symbol not of peace but of discovery
For anyone counting, that means 48 cards here, in addition to the six foils, making for a total of 54