Eldrazi Aggro (Legacy)

Eye of Ugin & Eldrazi Temple basically do the same thing, making your expensive Eldrazi easier to cast.
Ancient Tomb & City of Traitors are a little less forgiving, but still give two mana for 1 land.
Wasteland & Chalice of the Void slow your opponent down (T1 Ancient Tomb & Chalice of the Void for 1 is hard to come back from), while Mishra's Factory can help chump block early.
Because there is so much control in the current meta at least 3 Cavern of Souls is needed.
This version doesn't have any big nasty Eldrazi, but swinging with a 5/5 trample (Reality Smasher, if you have a Simian Spirit Guide and the right lands) on T2 is pretty slick.

Mid game Endless One can get pretty damn big & Endbringer gives you your card draw & control against a single large creature or many small ones.

Late game All Is Dust is your big reset while using Eye of Ugin to fetch up more creatures if your hand is empty.

For the sideboard Leyline of the Void is obvious, you swap all 4 and mulligan till you have one.
Ratchet Bomb goes in vs goblins & zoo to clean up anything that came before Chalice of the Void was cast or stuff that was brought in to play via Aether Vial.
Storm decks are making a come back so Thorn of Amethyst is perfect against them and also helps with control.