Liliana's Shade is an awful ramp spell (in that it doesn't actually ramp at all). You probably want to play a different one if this is your plan. Gem of Becoming also seems like an obvious inclusion; fixing for 3 colors at once seems awesome.

Wild Guess is pretty bad in this 5-color deck. I feel like Amass the Components would do what you want better, though even Divination seems like it would be far superior to a RR spell that doesn't net you cards.

You also probably want to adjust your land counts and match up your numbers. You again don't have enough lands in your deck for me to reasonably expect you'll cast anything; 19 lands is just not enough in a deck that needs to reach 10 lands to win.