It's fine to play one
Mournful Deathcap early on to help with not dying, you can rez it or try to draw another one later to play on 12 power with
A New Tomorrow which lets you tutor for a merchant to end the game.
Not sure this deck is great but it's sooooooo satisfying. Maybe not as satisfying as a slow mill deck tho
Was trying to find somewhere for
Avigraft in here, could probably drop a little ramp if you wanted to.