Mono-Green Eldrazi wants to ramp into Emrakul and grind with Kozilek's Command and Devourer of Destiny, so this is a race where our combo speed matters more than incremental value. Outland Liberator can sacrifice itself to destroy Urza's Saga or Vexing Bauble before it causes problems. Kraul Harpooner adds a cheap green body with reach and helps fill the curve. Its fight trigger can only target a creature with flying, and Emrakul is about the only one they have, so treat it as a 3/2 body rather than removal. Agatha's Soul Cauldron and Walking Ballista are slower value pieces that don't do enough fast against their ramp plan, so they come out in favor of proactive disruption.

Rakdos Delirium leans on cheap, efficient plays. Mishra's Bauble is cast for {0}, and Flare of Malice can be cast by sacrificing a creature instead of paying mana. Vexing Bauble counters any spell cast with no mana spent, so it shuts off both. Abrupt Decay answers Orcish Bowmasters, Nethergoyf, Moonshadow, Fear of Missing Out and Detective's Phoenix (all mana value 3 or less) before they snowball, and it can't be countered. Fatal Push stays in. Nethergoyf and Moonshadow both cost {B}, so they have mana value 1 no matter how large they grow, and Push kills them cleanly, along with Bowmasters and Fear of Missing Out. With revolt it also reaches Detective's Phoenix. We trim the cards that do the least here. Birds of Paradise is a 0/1 that dies to Lightning Bolt or a Bowmasters ping. Walking Ballista is mana-hungry. Agatha's Soul Cauldron and the main-deck Ouroboroid are slow and aren't part of the core combo. This keeps our core combo pieces intact while adding cheap interaction against their aggressive, graveyard-based shell.

Esper Control runs Solitude, Teferi, Time Raveler, and multiple sweepers like Supreme Verdict and Wrath of the Skies, so going wide too early into a board wipe is dangerous, and we want resilient, high-impact threats. Drana and Linvala is a sticky flying, vigilant 3/4. Its static ability only affects activated abilities of creatures your opponents control, and Esper has very few creatures, so the main value is a sturdy evasive body that is hard for them to deal with outside of Solitude or a sweeper. Ashiok, Dream Render stops their fetchland-based searching (Flooded Strand, Arid Mesa, Polluted Delta) and can mill/exile their graveyard resources, disrupting their mana consistency over a long grindy game. We trim slightly lower-impact value pieces since this matchup rewards resilient top-end threats over incremental grind pieces.