You lose the card draw, but you protect all permanents you control with counters, including planeswalkers, and you tack on a free proliferate
This will also eliminate the nonbo between Path to Exile and Mana Leak, incidentally making Path to Exile a better card in control decks
The reason I have picked out Rakdos Charm is that it does two niche things while still having some more general applications
It's a new charity MTG Secret Lair drop, where half the money raised from sales will be donated to Extra Life, an organization that supports children's hospitals
It was hard to get Massacre big enough to kill things often, while the deck wasn't using its triggers well either
Lacking Haste and a means to translate this trigger into mana natively does hurt though