Something I've loved since 2010 during Zendikar/Scars block. I know it needs work and love some advice. I know i need help with a side board & using the right balance of cards. Maybe there's stuff i forgot.
Don't tell "Just play Jund," I'll just report your post for harassment. If I wanted to play 3 colors, I'd play WBR. I can't do three colors in any format.
EDIT: My idea is use Kalastria Highborn to drain while recycling Bloodghast & pumping Paladin. But i think it might be easier to do a control deck around Kalastria or could try a more aggro deck using Paladin with Captivating
I'd start by cutting all the 2 drop 1/1s that get counters for stuff dying. Yes, I know they can be great in this magical Christmas land and I'm sure you probably have stories of them doing well. But don't forget the many more games where they were slow and you lost because they produce no real board presence.
With that said most newer players, or non-competitive players, don't play enough lands. I'd put in 3 fetchlsnds. That gives you 5 slots. 3 Liliana, of the Vail gives you 2 slots left. I'd suggest those slots being Noturinous... Or whatever the spelling is.
Take out those bad duel lands for 4 mutavault. They are pretty much required in this kind of deck.
Swap 1 mountain for Urborg. You need black much more than red with the highborn and swap another mountain for a swamp.