Hey mate, i highly suggest splashing white simply for playing Path to Exile to actually make another trigger for your Archive Trap s and i would also run Trapmaker's Snare to tutor out traps in case of fetchland cracks or other library search shenanigans when u have no trap on hand.I would probably drop Augur of Bolas and Breaking / Entering for some Snapcaster Mage s aswell
If you're going to copy and paste this guy's list, at least give him credit.
You don't need 4 Crypt Incursions.
I've tried the Krebovich mill while splashing white AND green (not at the same time) for removal and such, but it dilutes the deck strategy too much. What you want is to have blocks that draw you a card (Augur of Bolas ) and counters (Dispel and Spell Snare ) and black removal (think -X/-X cards) so you can keep milling.
Take out Mesmeric Orb. It mills you, too, and since you want to be playing a mill spell every turn in mill (best case scenario), spending 3 mana on an artifact that is easily removable isn't value.
Take a look at my mill deck for ideas on how a competitive mill deck that has answers for most tier 1 archetypes in the format should look like.
I disagree with iamacasual, Mesmeric Orb has so much value for only 2 mana (not 3 as mentioned above) if you play it in the right deck, especially the self-mill literally guarantees you a mill card every single turn, because you can use your snapcaster mage on spells in your graveyard - not to mention how devastating this card is against aggro decks which not only set you on a 5 turn clock but also themselves by milling them for tons of cards each turn when tapping out / attacking you to keep the pressure going.I already suggested you Snapcaster Mage and i see no reason for not putting him in that list except budget reasons but then again you are running fetchlands so i guess budget is not the problem here.However as iamacasual said, i would cut Crypt Incursion to at most 2 copies and i would drop Breaking / Entering for Snapcaster Mage finally.Ensnaring Bridge might work wonders in Sideboard in several match ups aswell.