Mono-Green Eldrazi wants to ramp into huge colorless threats like Ulamog, the Ceaseless Hunger and Emrakul, the Promised End, or explode with Fight Rigging triggers; Consign to Memory counters their colorless spells outright, hitting Ulamog, Emrakul, Drowner of Truth, and Eldrazi Spawn-generating triggers. Force of Despair answers a sudden wide board from Fanatic of Rhonas ramp turns or Malevolent Rumble tokens by destroying everything that entered that turn. Trim Faithful Mending and Persist for these proactive answers since this matchup is decided by disrupting their ramp and punishing their biggest turns rather than grinding incremental value.

Gruul Basking Broodscale wants to flood the board with Eldrazi Spawn tokens and creatures like Glaring Fleshraker and Devourer of Destiny in a single big turn off Urza's Saga and ramp lands; Force of Despair wipes out all creatures that entered this turn, punishing their explosive starts. Consign to Memory counters colorless spells outright, which lines up well against their many colorless Eldrazi threats like Devourer of Destiny and Emrakul, the Promised End, and it also stops triggered abilities like Glaring Fleshraker's spawn creation. Cut the slower Faithful Mending and reanimation-focused Persist since this matchup rewards proactive disruption over incremental card selection against a deck that can bury you in bodies quickly.

Izzet Prowess relies on cheap noncreature spells and artifacts like Mishra's Bauble, so Consign to Memory can counter the Bauble itself as a colorless spell. Wrath of the Skies sweeps away their army of small creatures like Dragon's Rage Channeler, Monastery Swiftspear, and Slickshot Show-Off before they get out of hand, buying crucial time against their aggressive clock. Faithful Mending and Persist come out because they are too slow against a deck this fast; prioritize interaction and sweepers that reset the board. Keep Solitude and Prismatic Ending in as your primary answers to their early threats alongside the new sweepers.