Mono-Green Eldrazi wants to ramp into Emrakul and Devourer of Destiny off Eldrazi Temple and Ugin's Labyrinth while digging with Ancient Stirrings and Malevolent Rumble. Damping Sphere taxes their multi-mana lands and caps big mana bursts, slowing both Urza's Saga and their ramp lands. Surgical Extraction can strip a key Ancient Stirrings or Malevolent Rumble copy after it hits the yard, disrupting their card selection engine, and Ashiok, Dream Render shuts off any library searching from their lands and fetches. Force of Despair and Witherbloom Charm are weak since their threats aren't cheap enough or don't die to a sweeper that only hits creatures entering that turn; our removal suite (Fatal Push, Fell the Profane, March of Wretched Sorrow) already handles their bigger threats.

This Gruul combo deck wins by looping Basking Broodscale with Blade of the Bloodchief for infinite colorless mana and Spawn tokens, assembled via Urza's Saga, Ancient Stirrings, and Malevolent Rumble. Culling Ritual blows up Blade of the Bloodchief, Basking Broodscale, and any Eldrazi Spawn tokens in one shot since they're all mana value 2 or less, directly answering the combo pieces while ramping us. Damping Sphere taxes their big mana lands (Eldrazi Temple, Ugin's Labyrinth) and slows down casting multiple cheap spells in a turn to assemble the loop. Force of Despair only kills creatures that entered this turn and won't catch Blade of the Bloodchief or an already-resolved Broodscale, so it's a weak answer to the actual combo and comes out in favor of more comprehensive artifact/permanent hate.

Izzet Prowess is a low-to-the-ground aggressive tempo deck full of 1-2 mana threats like Dragon's Rage Channeler and Monastery Swiftspear backed by burn. Surgical Extraction can proactively remove a troublesome Dragon's Rage Channeler or Cori-Steel Cutter the moment it hits their graveyard, denying rebuys and hosing their delirium plan. Sheoldred's Edict is a clean way to force through removal on their lone threat when they try to protect it with Mutagenic Growth, since it doesn't target. Orcish Bowmasters and Sheoldred, the Apocalypse are excellent here as they punish their card draw spells like Preordain and Expressive Iteration; Thoughtseize and Fatal Push remain premium since they're both cheap and proactive against this low curve deck.