Troll of Khazad-dum is great in cubes that support reanimator since it puts itself into the graveyard, gets you a land and is difficult to block. Arwen, Mortal Queen and Samwise Gamgee have given g/w a much needed boost in my cube. My cube is 720 cards though, so my multicolor selection is 10 cards per color pair. That being said, Faramir, Prince of Ithilien is really good as well. And finally, Elven Farsight often gets the draw which makes it better than most blue cantrips a lot of the time.
Nice, that's a solid inclusion for some red based sacrifice! Any reason you run that card versus Reckless Abandon? It's one more mana but I assume being at instant speed makes it more useful despite that?