The Meathook Massacre has never been affordable, which keeps it off many tables, but trust itll turn a game around in a heartbeat if you ever see one
Not having to pay the mana cost for them and being able to give them haste is more than enough to win games in any format
In fact, while it's the largest price movement we've seen, Aetherworks Marvel isn't the only card spiking off the back of the Energy craze
Since you can play it during another players turn and at instant speed, you can catch them by surprise
Come check out Beth's Precon Primer for Explorers of the Deep, from The Lost Caverns of Ixalan
4 Energy is a 'lot', if you don't have ways of generating more of it, and while blowing up a single land a turn might seem slow, it is annoying, and Commander runs a lot of nonbasics