Ask a Magic Judge

Thank you for the intriguing question. I actually had to check with quite a few people to make sure that I got the right answer. (In the end, I had to email @tabakrules himself to get the answer straight from the rules manager.)

So… Wastes doesn’t have a land type. This means we can’t search up two Wastes with Myriad Landscape since they don’t share a type with each other. 

This leaves the big question of can we search for one Wastes? Is having a basic land type required to be found at all?

No, you can find any basic land if you’re only searching for one land. Sharing a basic land type only matters if you find multiple lands.

This was clarified with an updated Gatherer ruling in 2018.

TL;DR - You can find one Wastes but not two.