Dont Splash Colors Unless You Start Green Unlike some recent sets ( Final Fantasy , Tarkir ), Edge of Eternities does not support three-color decks or splash-heavy builds well
it can give your Grixis Control deck a Combo-Control vibe like a pair of Splinter Twins or a couple of Upheavals (if you grok)
It's a giant monster that arrives at instant speed, it can't be countered, and it bounces nonland permanents or spells on the stack whenever you cast something
Even as late as Lorwyn , green was still seen as being slightly behind the other colors in enough of the hearts and memories of players
Example Decklist: Krile Baldesion Plays Uno I think with a gifted deck it's important to have at least a few cards included primarily to evoke a sense of 'Oh, that's neat'
However, Ive never seen that rule enforced for Commander 2HG