Malcolm, Alluring Scoundrel: Primarily making this swap so I don't have to deal with day/night anymore. The chorus counters I would consider an additive distraction. A 2/1 flash flyer is different than a 1/1 unblockable obviously. Deals more damage, but sometimes can be blocked. Flash makes it better in tempo decks.

Supreme Will: I've always been a fan of Supreme Will. Confounding Riddle should be a slight upgrade. Counter unless you pay is obviously better than . Forbidden Alchemy is better than Impulse in graveyard decks and about the same in other decks.

Deep-Cavern Bat: Being able to take creatures can really mess up your opponent and stop certain combos. Having lifelink also makes the bat better in a race and makes equipment and +1/+1 counters better. Only having 1 toughness does make it more vulnerable to removal, but I think the upside more than makes up for that.

Sentinel of the Nameless City: Solid 3 drop. Wasn't sure what to cut. This attacks and blocks way better than Augur and it only costs a single . Having coven was also pretty rare on Augur. I'm hoping the map tokens will play out better.

Molten Collapse: Strictly better than Dreadbore. I don't anticipate the second mode coming up very often. Most valuable targets are probably Skullclamp, Bonesplitter, or Wild Growth/Utopia Sprawl.