By mirroring the best ability on the battlefield, Sakashima increases consistency and ceiling without adding complexity
With a single Brainstorm, you can immediately access the draw seven ability here, for example
When this creature enters, search your library for an instant or sorcery card with the same name as a card in your graveyard, reveal it, put it into your hand, then shuffle
(As an aside to that, do you have the discipline to dump the fun card to make sure you keep the Mana Rock?) If so, perhaps fewer (ramp spells, not Lands) are warranted
The biggest downside of the deck is its heavy reliance on Equipment
Now obviously, being in mono black, Fandaniel can bring a lot of synergy with forcing things to die