My own large vintage cube. Goal is to use powerhouses wherever possible , provide a fun experience to my friends and me, without spending hundreds per card - so this cube is mostly based on what i own. I always love when there is some feedback on cards to add or to cut.
There are currently 2 "custom conspiracies" in play one that gives you Tron( 1x Urza's Mine, 1x Powerplant, 1x Tower) and let's you "find" the Tron pieces by having the line "When you play one of the tron lands, you may reveal another from the sideboard and put it on top of your library"
The other one allows you to use off of each artefact land of the MH2 cycle. It is a powerful tool for fixing and more than that if you build around an artefact matters deck but those lands all enter tapped. In addition to that it is an interesting option for land destruction such as Armageddon.