This is a creative idea i came up with, which does fairly well but obviously has problems with decks that have a lot of graveyard hate. I am really happy about it after testing it. It catches people with their pants down, because they don't expect a 4 color deck.
Here's a brief explanation of the Colours I chose:
White: Needed to play Angel of Serenity, and Unburial Rites Flashback
Black: Needed to hardcast Unburial Rites, and for Self-Mill such as Grisly Salvage. Also, It is needed for Golgari charm which saves us from early zombies, Pilgrims or Arbor elves, and possibly tokens.
Green: Mulch, Farseek, thragtusk, you name it. Mulch and farseek alone are great mana fixers, alowing you to diversify your play. I have not once had a mana issue with these 8 cards in my deck.
Blue: my favorite color splash. Forbidden Alchemy provides an Instant-speed self-mill boost as well as an emergency draw from one of your top 4 cards, extremely helpful in certain situations. Also used for the all important Supreme Verdict and The detention spheres. Sometimes I even deck myself too fast and I need to slow down so I don't run out of cards.
Brief overview of gameplay:
-Really fast decks were sometimes a problem, so I added Golgari Charm as an early defense mech. Also Works great with Thragtusk and Angel of Serenity, regenerating them can give you a huge advantage over your opponent.
-Control Decks were not a huge problem, since im running 3x unburial rites, 4x thrag and 4x angels. They cant counter em all, and I have protection from mass removal via Golgari Charm.
-Detention sphere, which I have dubbed "Ratchet 2.0", is great for all removal situations.
-Supreme verdict is Self explanatory, makes it hard for midrange and aggro to establish a good offense.
-You may question my use of only 4 basic lands, but it works out. Its great to have an Evolving wilds in your opening hand, so you can make a choice as to what land you need to go fetch turn 1. To make sure you don't draw into more evolving wilds, just make sure you mill them with grisly salvage or forbidden alchemy, so you dont have to worry about a dead draw.
I have 1 of each color i need in my deck, and it has worked out perfectly.
Let me know what you think, i'd love some feedback and sideboard suggestion please! Anything you can help me with is greatly apreciated!