Mono-Green Eldrazi is almost entirely reliant on nonbasic colorless lands like Eldrazi Temple, Ugin's Labyrinth, and Cavern of Souls with only 5 Forests as basics, so Blood Moon can severely cripple their manabase by turning those into Mountains. Damping Sphere further slows their ramp-heavy turns and shuts off the double mana from Eldrazi Temple. Sink into Stupor and Skateboard don't meaningfully answer their large Eldrazi threats or land-based ramp plan, so they come out. Tormod's Crypt remains valuable to strip value from cards put into the graveyard by Malevolent Rumble.

Gruul Broodscale leans heavily on colorless-producing nonbasic lands like Eldrazi Temple, Ugin's Labyrinth, and Urza's Saga alongside a heavy artifact/spell curve, so Blood Moon turning their nonbasics into Mountains can strand a huge portion of their manabase since they only run 6 Forests as basics. Damping Sphere both taxes their multi-spell turns and turns their double-mana Eldrazi Temple into a single colorless source. Sink into Stupor and Skateboard are cut since they don't meaningfully interact with their ramp-into-Emrakul/Devourer of Destiny plan. Keep Tormod's Crypt in since it can proactively strip fuel from Malevolent Rumble digging.

Izzet Prowess floods the board with cheap low-toughness creatures like Dragon's Rage Channeler, Monastery Swiftspear, and Slickshot Show-Off, making Whipflare's 2 damage to each nonartifact creature a great sweeper since it leaves your Kappa Cannoneer and other artifact creatures alive. Consign to Memory counters the Flurry triggered ability from Cori-Steel Cutter to prevent a Monk token or counters colorless spells like Mishra's Bauble. We trim Preordain since our plan is racing/board control rather than card selection, and Sink into Stupor is weak against a deck with few standalone permanents worth bouncing. Keep the full Engineered Explosives package since it doubles as another sweeper against their swarm.