However, there are tons of ways to get the effect over and over (Identity Thief/Helm of the Host comes to mind), so get ready for a lot of dirty looks
1 Gwenna, Eyes of Gaea
Not to mention that most decks that took advantage of these cards didnt even use the graveyard for anything else, so you could exile anything and it wouldnt matter
Then the five-drop 3/6 lifelink Lotuslight Dancers will toss ETB one card of each of its colors to your graveyard, great for bringing back and then they don't have to be dorks, so your Green card could be Life from the Loam, as a great example
Though this goyf only counts your own graveyard , it makes up for that in coming down for one
Myr Battlesphere: A great beater, especially in Commander, and even better if you are having problems gathering up four colors for other plays