This is a more focused E-Tron list I have been running the last couple weeks. I did not like how Little Emrakul felt in the list so I went with Big Emrakul instead.
4 Chromatic Star 4 Chromatic Sphere 4 Expedition Map 4 Sowing Mycospawn 2 Emrakul, the Aeons Torn 2 Ulamog, the Ceaseless Hunger 4 Urza's Mine 4 Urza's Tower 4 Urza's Power Plant 2 Forest 4 Eldrazi Temple 4 Ugin's Labyrinth 4 Ugin, Eye of the Storms 4 Ugin, the Spirit Dragon 4 Karn Liberated 4 Karn, the Great Creator 2 All Is Dust 1 Chalice of the Void 1 Relic of Progenitus 1 Pithing Needle 1 Altar of Dementia 1 Torpor Orb 1 Liquimetal Coating 1 The Stone Brain 1 Trinisphere 1 Ensnaring Bridge 1 Spine of Ish Sah 1 Haywire Mite 1 Spellskite 1 Soulless Jailer 1 Platinum Angel 1 Sundering Titan