I assume the strategy is to max land destruction strategy.
Bloodghast is probably your best card with the extremely high land count and Loams. It’ll recur every turn.
Riftstones should find a way into the main deck. So that you can play Loam in game 1.
I’d probably cut the Blue entirely. Your count is only at 14 and you don’t seem to want Narc. Not have you chosen to play Amalgam. For disruption you can add Unmasks, Force of Vigor that fit the game plan of destroying your opponent’s mana base. You have the black count and can get the green count easily (already have Once upon a time and Loam). Particular smashing two Moxen with Vigor or taking 1 with Unmask can be crippling when followed up with multiple Strip effects.
Bridge is underwhelming. I understand it combos with Ichorid, but that’s it. There should be a better option to give the deck more recursive power. I’m just not sure what that card is. You do have access to mana.
Sideboard, I would strongly consider Null Rods. With your land destruction it’s a legitimate lockout plan. They also turn off Tormod’s, Ballista and other pesky artifacts.
In terms of matchups, the Mirror Match is probably going to be bad. Any other deck that can deploy threats fast may also be bad. I would look at some way to get bigger threats on the table from the GY. Dread Return may need to space in here (with Griselbrand or something else independently good?) to close out games.