I have a very different experience with Faithless Looting. And I encourage people not to be on mill cards like Tome Scour, especially without Echo of Eons. The selection while discarding in Faithless Looting makes it better than Mental Note with cards like Emry and Echo, it's also castable off :u::r::r: which I find myself float pretty often post-Echo with double LEDs (for Breach, Gamble, Burning Wish). If you don't like Faithless looting, I'd suggest Breakthrough instead. When favoring mill cards over Gamble and cantrips in general, do note that those don't help you find sideboard cards.
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A couple more unordered notes:
- Considering a Plateau (lost me a game), instead of either a basic or a fetchland, but fetchlands are paramount and all of the 3 basics enables longer games against Delver and other blue wasteland decks
- Shattering Spree could be replaced with
By Force,
Meltdown or
Shenanigans. They all have pros and cons, so I'll make a table with those in to compare and pick one more easily based on the deck itself. Similarly to what We've done here
https://ddftwiki.netlify.com/appendices/removal-tables/
- Emry is greatly underrated and maybe warrants a second Defense Grid
- Idris Elba is nuts, does bounce hate pieces, can be recovered with Reclamation. And even enables instant speed wins (imagine your Burning Wish exiled and opponent under Veil) during their upkeep
- The 2 copies of Manamorphose are the weakest additions to the list in my opinion, they do have pros like fixing colors post-Echo, or make more monks. They also enable some little edges like drawing whatever you tutor for at instant speed. But more importantly they do next to nothing in your starting hand other than maybe put one extra card in your graveyard and maybe 1 extra Storm count for a value Brain Freeze
- I still think Thassa's Oracle is win-more and much worse than Burning Wish at least in game 1
- Haven't had time to test Experimental Frenzy