Past that point, Locke commonly makes a Treasure token and can cast something
This allows for a loopable recasting of your graveyard if you have enough cards in grave and mana
This madness spell puts a stop to one players incessant drawing real quick, and you might even back them into a corner if you can madness this out at instant speed in response to a big draw spell
On the other hand, if your Magic budget is limited, coming out ahead over the long run doesn't make up for the fact that you're spending a big chunk of your Magic budget on cards that you might not really want and aren't guaranteed to be able to trade or sell for an immediate profit to get the cards that you do want
It's a self-fueling token generator, but it also nabs any discarding you do through other means, making it a fun addition to cycling decks or decks that just do a lot of looting in a game
It also helps that it readies them to prevent any crackback from your opponents in challenges