I hate it in Blue-ket Monster Brawl when people say dark energy is the best because it is literal garbage!!!!!!!!!! >:(((( Dark energy is literally so weak its just a waste of space and I know people will defend this by saying its good but I have won more monster brawls without dark energy than I have won.(And this is coming from someone who plays wayyy too many monster brawls). After you literally upgrade it to the max, it literally will not kill any monsters!!!!!! It just stays there like the annoying little $#!#stain it is. Take my advice, the Pizza Boomerang, Rapid eggs, Booming Bubbles, Rebounding Shell, and Curving Banana are the best. Get those and you're good to go.
(But you like dark energy and want to use it, I guess I can't stop you) (If anyone wonders why I'm typing Blue-ket, it's because Scratch sucks at censorship.)