What's your Favorite #5 Elder Dragon Legends

In the fifth WIYF post we are going way back to Legends with the Elder Dragon Legends. All of the Elder Dragon Legends have 3 things in common. First, the mana cost is 2 any color and 2 each of 3 different colors. Second, at the beginning of your upkeep you must pay 1 mana each of the three colors in the card's mana cost or sacrifice that creature. (Example, For Nicol Bolas you must pay blue, red, and black or sacrifice him. Nicol Bolas's mana cost is 2, blue, blue, red, red, black, and black.) Third, each Dragon is a 7/7 with flying. Make sure to comment and tell us what you think is the best.