Mainboard (60)
Creatures (35)
Instants (1)
Enchantments (6)
Lands (18)
Goblins will try to race you with Goblin Lackey and Goblin Piledriver backed by Goblin Warchief haste, so early defense is critical — Wall of Blossoms and Wall of Roots buy time while you assemble your mana engine. Goblin Sharpshooter is your premier answer, as it can tap repeatedly with Wirewood Symbiote to machine-gun the entire board once your elf count grows, completely neutering their go-wide strategy. Masticore is too mana-intensive and conflicts with Survival of the Fittest, and Kamahl is too slow against a deck that can kill you on turn three. If you stabilize and generate a large board, Biorhythm is a clean one-card win since your elf token army from Deranged Hermit will dwarf their life total contribution — especially after Goblin Sharpshooter has cleared their small creatures.
Mono-Blue Stiflenought aims to land a Phyrexian Dreadnought by countering its triggered ability with Stifle, creating a 12/12 trampler for one mana while your opponent holds up Counterspell, Foil, and Gush to protect it. Your game plan is to go wide with tokens from Deranged Hermit and mana elves, making their counterspells inefficient against the sheer volume of threats — they can counter one Survival activation but not ten elves. Biorhythm comes in as a finisher that can steal games when you have a board advantage but can't attack through a 12/12; once they tap out or you have enough creatures, a resolved Biorhythm immediately kills them if they only have the Dreadnought. Cut the mainboard Naturalize since they have very few artifacts or enchantments game one (just a possible Powder Keg), and post-board watch for Tsabo's Web which can slow your Gaea's Cradle.
Mono-Black Midrange attacks you through discard (Duress, Cabal Therapy, Hypnotic Specter), edict effects, and hand-hate that punishes your card-advantage engine. Tormod's Crypt answers Withered Wretch before it can exile your graveyard creatures and disrupts any Cabal Therapy flashback value. Goblin Sharpshooter is a potent answer to their small threats like Nantuko Shade and Knight of Stromgald while also clearing Mishra's Factory tokens. Post-board they will bring in Engineered Plague naming Elves, so prioritize assembling Priest of Titania and Wirewood Symbiote quickly before the plague lands, and keep Deranged Hermit as a squirrel token flood that dodges Elf-specific removal. Anger and Yavimaya Granger are low-impact here since haste is less relevant without a mass of tokens and the single land fetch doesn't offset their slot cost against a non-permanent-heavy disruption suite.