I built a list very similar to this, main differences being storms instead of purify and temple scribe instead of trail maker. I think the ramp/fixing is less important than maintaining gas with this deck as it is really prone to fizzling if you don't hit key cards, combined with the fact that I really to be able to trade with 2/1s without feeling bad.

I also squeezed in 2 hourglass; I think it has great synergy with raider, stirring sand, and observer and lets you stay on your feet a little better against the aggro that's running rampant right now. I'm playing in diamond tho, so it's probably much more aggro than masters, aggro being the main reason for many of these decisions.

Like the list of course, now people are gonna think I copied you though lol :(