Energy is universally used across every format since the effect never changes
Lotus Petal gives you a burst of any color right when you need it most, while Chrome Mox and Mox Diamond trade card advantage for speed, an exchange that quick decks are more than happy to make
Although she would become a duller card I think she would be more rounded if the minus loyalty costs were increased along with a starting loyalty increase, something like 4 to start, -2 to Explore and -8 or 9 to make fatties
During your Main Phase, if this card was Pendulum Summoned this turn: You can send 1 "Performapal" monster from your hand to the Graveyard
Coalstoke Gearhulk With Coalstoke Gearhulk youre getting a nice, big body, and getting to reanimate up to a 4-drop until the end of turn
It is slightly worse than Growth Spiral, since you can only play a land from the top four cards of your deck, rather than taking one directly from your hand and putting it into play, but still very good