Mono-Green Eldrazi ramps hard via Eldrazi Temple and Ugin's Labyrinth into huge threats like Emrakul, Ulamog, and Ugin, Eye of the Storms, so speed and disruption matter more than incremental value; Claim the Firstborn can steal an early Fanatic of Rhonas or Disciple of Freyalise mana creature to slow their ramp and add pressure. Cool but Rude provides a fast, resilient clock to close the game before their top-end threats land. Vexing Bauble has limited targets here since their spells cost mana, but still catches any free effects. Ox of Agonas is cut as too slow against a deck that can otherwise bury us with card advantage and huge bodies.

Izzet Prowess is a fast, low-to-the-ground aggro-tempo deck that wants to race; Vexing Bauble shuts off their free Mutagenic Growth and taxes their cheap cantrips like Preordain, which is a huge tempo gain. Surgical Extraction can strip a key Dragon's Rage Channeler or Cori-Steel Cutter after it hits the graveyard/battlefield to blunt their engine. Claim the Firstborn steals a cheap threat like Monastery Swiftspear or Slickshot Show-Off to turn a blocker into extra offense. Ox of Agonas and Nethergoyf are cut since they're clunky against a deck this fast and low-impact for their mana; Raucous Theater's tapped land is too slow in a race.

This Gruul deck leans on colorless Eldrazi ramp through Eldrazi Temple and Urza's Saga plus card selection from Ancient Stirrings and Malevolent Rumble to power out Emrakul or Devourer of Destiny; Vexing Bauble is largely dead here since their spells cost mana, so this plan focuses more on speed and disruption. Claim the Firstborn steals an early Glaring Fleshraker or Basking Broodscale to blunt their board development. Cool but Rude provides a resilient clock that punishes their slower, ramp-heavy draws. Ox of Agonas is too clunky against a deck that can close games with a giant Eldrazi threat, so it comes out for more proactive and disruptive cards.