This matchup is a race against a slow, land-heavy ramp deck; Unholy Heat is excellent removal for Basking Broodscale and other small Eldrazi, and once delirium is online it scales up to 6 damage to answer bigger threats like Devourer of Destiny. Tormod's Crypt is a cheap artifact that exiles their graveyard, which keeps Emrakul, the Promised End more expensive, turns off Shifting Woodland's delirium, and cleans up the cards Malevolent Rumble puts into the yard. Mutagenic Growth and Violent Urge are combat tricks that matter less when the opponent has few early blockers and is mostly durdling toward Emrakul, the Promised End or Devourer of Destiny. Keep the core aggressive plan intact and just race before Urza's Saga and Eldrazi Temple take over the game.
Mono-Green Eldrazi relies heavily on utility lands like Eldrazi Temple and Ugin's Labyrinth to accelerate into big colorless threats, so Consign to Memory can counter those colorless spells and their cast triggers, disrupting their game plan. Tormod's Crypt disrupts Malevolent Rumble value by exiling card types that reduce the cost of Emrakul, the Promised End, and it's free to cast so it doesn't cost tempo. Mutagenic Growth comes out since this matchup is decided by racing before their giant Eldrazi threats like Ulamog, the Ceaseless Hunger take over, not by combat tricks. Try to close the game quickly since Slumbering Trudge and Drowner of Truth can stabilize the board once they resolve.
Mono-Green Eldrazi ramps through Eldrazi Temple and Ugin's Labyrinth into huge colorless threats like Emrakul, the Promised End and Ulamog, the Ceaseless Hunger, with Fight Rigging as an additional cheat-into-play engine. Meltdown at X=0 hits nothing relevant here since they run few cheap artifacts, but scaling it up can catch Fight Rigging is not possible since it's an enchantment, so Meltdown mainly answers little in this specific list; still, Tormod's Crypt disrupts Malevolent Rumble and Kozilek's Command graveyard synergies and can proactively deny value. This is a race we need to win before their ramp completes, so Violent Urge and Mutagenic Growth are cut for the sideboard's higher-impact disruption. Prioritize a fast curve and don't get bogged down trying to out-value their top end.
Suggested new sideboard cards to pick up for the current metagame.
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