Deck looks pretty good, the biggest issue with it is the land count as you pointed out in the description. Most of my decks run around 36ish lands depending on the mana curve and how much ramp there is. I can make afew suggestions about cuts to make room for them. As a side note, when you are playing EDH your commander is technically supposed to be a legendary creature (like Brimaz, King of Oreskos. If your friends don't mind you using Elspeth, I wouldn't worry about changing it but wanted to let you know. Also since mox lotus is from unhinged, it isn't legal in commander (again if your friends don't mind you using it, don't worry about it.) Anyway here are some potential cuts:

Eldrazi Displacer: You don't have many sources of colorless mana for it's ability so more times than not you won't be able to use it. Unless you want to add more sources, i'd cut him.

Memnite: Yes he's free but short of odd combos, it's generally not worth it. It oftentimes cant attack due to the opponent just playing a slightly bigger creature and late game you should have enough mana anyway.

Lifegain cards: Unless you have strong synergy with gaining life, it's often times not worth it as if the reason you need to gain life is you are getting beat down by creatures, you would want to draw an answer to those creatures rather than just buying you time to draw that answer. I think you can cut Ajani's Pridemate, Apothecary Initiate, Angel's Feather, Graveyard Shovel

Soulfire Grand Master: While its a good card, you can't actually activate it's ability and even if you could you are not allowed to run this in your deck. Due to its ability it has a white/blue/red color identity whereas your commander is only white.

Eternal Scourge: Good in combo decks, not as much elsewhere

Conjurer's Closet dont think you have enough enter the battlefield abilities to take advantage of this card

Grinding Station If your plan is to win through damage this seems out of place. This card normally only fits into dedicated mill decks. You also don't use your own graveyard enough to want to target yourself

Perpetual Timepiece ditto

Call to Arms often times is situational

Celestial Dawn doesn't help you that much

Enduring Renewal okay in combo decks but here it might hurt you more than it helps

Quarantine Field You currently have it listed twice

Devout Lightcaster In a game without anyone playing black it doesnt do much.

Erase you already have a lot of ways to deal with enchantments

Deicide ditto

Ornithopter doesn't do a huge amount by itslef

Reciprocate not the best here since you have to have been dealt damage before you can use this card

Angelic Edict high mana cost for what it does

You already have enough graveyard hate.Might need to cut a few more after these but it should be most of the cuts you need. Hope this helps!

If you want me to make some suggestions of cards to add I can help with that as well. Just wanted to focus on getting enough lands first.

Not sure what to say about this except

• You know you can't run a planeswalker as your commander right? Except for the 5 that WotC printed that specifically say they can be a commander.
• You can't play Mox Lotus as it is an Un-card and not a real MtG card and therefore is not legal in any non-Un-format.
• Since you really have no way to draw extra cards in this entire deck you will empty your hand by turn 7 or so and top deck for the rest of the game every time. This deck likely will never be able to win or do anything particularly significant in a game against real decks.

Best.

Deck seems so heavy white that unless you want to add some more red cards, i'd stick with a monowhite commander. Also don't feel discouraged, its a good start to the deck and once your land count is up a bit more i think you'll be fine.