Going to take this for a spin again tonight at Monday Modern event. I haven't played the deck since it played lingering souls. The list i'm going to take is linked below. I'm thinking of cutting down on a Kaya, some displacers and some smashers in order to fit in eternal scourge because that sounds like a good addition. I've cut the shambling vents becasue i'm not sold on having tapped lands, but how neccessary are they? to people find that they win you matches?
http://tappedout.net/mtg-decks/22-08-17-bw-eldrazi/?cb=1564965541
1x Blast Zone (WAR)
4x Caves of Koilos
4x Concealed Courtyard
4x Eldrazi Displacer
4x Eldrazi Temple
2x Fatal Push
2x Ghost Quarter
2x Godless Shrine
4x Inquisition of Kozilek
2x Kaya, Orzhov Usurper (RNA)
1x Marsh Flats (MM3)
4x Path to Exile
1x Plains
4x Reality Smasher (OGW)
4x Relic of Progenitus
2x Silent Clearing (MH1)
2x Swamp
4x Thought-Knot Seer
1x Thoughtseize
4x Tidehollow Sculler
4x Wasteland Strangler
Sideboard:
1x Celestial Purge
2x Disenchant (M20)
1x Grafdigger's Cage
1x Kambal, Consul of Allocation
1x Kaya's Guile (MH1)
1x Kor Firewalker
1x Rest in Peace
2x Settle the Wreckage
1x Stony Silence
2x Warping Wail
2x Zealous Persecution