This is the mirror match against Mono-Green Eldrazi, running essentially the same Fight Rigging and Emrakul, the Promised End shell, so small edges matter most. Endurance is a flash 3/4 that blocks their Fanatic of Rhonas or Disciple of Freyalise for free while resetting their graveyard against any Malevolent Rumble value they've picked up, and Dismember can pick off a Disciple of Freyalise or Fanatic of Rhonas before it ramps them further. Elder Gargaroth is a strong top-end swap since it dodges most of what they can throw at it and generates ongoing value in a grindy mirror. Keep the core Fight Rigging and Emrakul package intact since that's still your primary win condition.