Why the six swamps? hitting G and U early seems more important for the deck, I guess it's to make rites live more frequently, but 4 five mana removal spells are a lot.
Why did you only run one of the mandrils?
I might have a extra swamp in here over a forest or island. This deck doesn't do anything before T3 and all it's T3s are colorless anyway. I actually almost cut a Rites, but glad I didn't. I didn't want to overload my graveyard with 2 mandrills, Treasure Cruise and the Lich Lord. This deck did not often get a gravy-yard going until midgame anyway so the Mandrills were basically 4/4 tramples for 5.
Options are to cut:
o Treasure Cruise
o Pearl Lake Ancient
o Kheru Lich Lord
o removal
o a morph
The morphs are super important for this deck, willing to give up trample there. Not cutting removal. Lich Lord, as I mentioned was kinda meh, but it is a win con. Mandrills could be better than Ancient, but I actually was curious about seriously playing a 7 mana dude. I wanted to play the self-milling mind rot (and I did once, vs. Jeskai combat tricks.dec), but there's not a lot of space for it.