Ior Ruin Expedition is obviously bad but Spell Pierce looks really great. I think it will be played in tempo thresh. I dont know if it deserves a spot in landstill. Maybe it can replace Counterspell...but otherwise I like the versatility of hard counters.

@memnarch
Interesting. I usually dont like balance in Landstill.
I dont like the o-rings in your build. How do they work in testing?
Would be wrath/standstill/Path the better choice?
And I think you should play 6 fetchies. F. Conclave and Mutavault are too much - you play 4 wastelands.

@mossivo
I dont get the point with Marsh Flats. You play no swamps and you cant fetch a basic island, which seems much more important for me than the basic plains. At least I would play 1 Marsh Flat and 1 Delta.
3 Mishras looks a little strange but you play 3 decree for the finish which is acceptable.

@Dust bowl
I played dust bowl for several months in my list but I will cut it again for 1/2 wastelands. On the paper it looks really nice when u can screw your opponent with only one land but practically I often see me that I cant tap out in my turn (holding a counter) just to waste a land and see my opponent top decking a land. Wastelands fits in this roll. I can waste the land and play EOT Cunning wish->Enlight. Tutor-> CoW for the screw.
Otherwise dust bowl has its power in the control mirror.