Hypnotic Sprite > Behold the Multiverse: Sprite was weak for this environment. Replacing it with a slam-dunk of a draw spell. Love these Foretell cards.
Shell Shield > Depart the Realm: Shell Shield had low expectations going in, and it met them. Depart the Realm is a simple bounce spell but will likely be much more of a combat trick than Shield.
Disfigure > Poison the Cup: Poison the Cup is an excellent removal spell. It replaces Disfigure, which remains in the tier 1 of the maybeboard.
Chandra's Pyrohelix > Demon Bolt: Testing out Demon Bolt as removal. Less flexibility than Pyrohelix, but more damage.
Vivien's Arkbow > Masked Vandal: Arkbow is one of my favorite cards, but it never panned out in this environment. Testing Masked Vandal for more artifact/enchantment destruction - though I'm not sure if the conditionality of having a creature in yard will be prohibitive.
Rhythm of the Wild > Arni Slays the Troll: Rhythm, even in the best circumstances, was too slow. We'll test out Arni Slays the Troll as a fight spell, but there are many other cards that could fill this slot.
Meteor Golem > Bretagard Stronghold: I won't go into depth on each of these cuts, but I decided to cut the mediocre colorless cards for these utility lands. For whatever reason, there just aren't great options for colorless cards at my power/price level. If you have recommendations, send them my way, but in the meantime, might as well play utility lands.