vaan104

painful quandary would work nice in here

maybe add pacifism? or some other type of creature control/ removal. otherwise it looks pretty solid. It has drawing power, mana ramp, buffers, and ways to bounce creatures.

precursor golem makes all of your golems die to a single lightning bolt? and karn, silver golem is the most classic golem but he is not grouchy lol

karn, silver golem could be cool with all the artifact stuff you are doing

oops it was volrath's stronghold

since you have whip of erebos id run obzedat because they combo well and with those colors there is all kinds of board clear spells u should have a few

tsabo's decree is the bane of a creature theme deck

cavern of souls, vorath's stronghold, nykthos, shrine to nyx, strip mine, urborg, tomb of yawgmoth would all be good lands to look at
and hes not a demon but grey merchant of asphodel would be nice

drop 1 scout and 1 archer?

maybe drop gladecover scout for it

nykthos, shrine to nyx might help and karametra's acolyte

dragon arch is a cool card for playing multicolor

channel is banned in edh. id add vorel of the hullclade

exava, rakdos blood witch would be good and mikaeus , the unhallowed if u can fit him

cabal coffers and nykthos, shrine to nyx would be good. and cavern of souls. id also throw in entomb as a way to get filth into your graveyard. and some board clear would be good like nevinyrrals disk, plague wind, damnation, or in garruks wake.

add bow of nylea?

no relentless rats?

I never realized white had infect. sublime archangel could make this a lot more powerful.

in dimir mill haunting echoes is a great card

I had to look at all your card art to see if there was a reason lol maybe that's your next theme deck