I'll admit, I misread this at first, thinking you can only copy something with mana value equal to X, but it is worded in a manner that you count the blue mana in it's cost as well
I pulled basic lands for Urborg, Tomb of Yawgmoth and Yavimaya, Cradle of Growth to make these more likely
If you can continue to quest with your Evasives and control the board with Dragon Fire, Mother Knows Best, and Kuzco, you should have an easy time staying ahead on lore
The 8 mana sorcery ability to get a 4/4 Dragonwith lifelink that deals 3 is okay but not significant enough
Pair all this sacking with damage dealing or life loss inducing cards like Blood Artist, Zulaport Cutthroat, and Mayhem Devil and you'll soon get the table under your heel