Now I'm stuck thinking I need to build a cube...
Do your friends have some too? If yes, then I need my favorite decks. If not I'd have to make sure I had enough to build four decks at a time (I only have two sets of RG, WG, and GR and one of each of the others for lands and staples ...)
My big box of Ascension has four cubes sets in it... but it is huge and so probably goes against the spirit of this.