I don't really know. With a deck like this it seems you don't ever want to miss a chance to cast your next spell or more than one spell. I did some "Starting Hands" and never liked seeing the
Evolving Wilds. Maybe that is just me though. I'd be inclined to keep the Fumaroles and change the Wilds to some combination of Islands and Mountains and see how it plays. Or change the Wilds to
Shivan Reef.
Are you going to get in a
bind with the right colors more than you're going to "miss a turn" by having a land come in tapped? I'm just back to MTG with Oath in January after some considerable time away and the things I keep coming back to so far are "more removal" and "more speed."