@SanctisPie21634, great question but I have to be upfront about one thing first: your meta share assumptions are quite aggressive. Over the last 60 days of actual Modern tournament data, Broodscale sits at 10.4% meta presence and Goryo Reanimator at 8.8%. The Esper Blink shell (closest match to your Goryo+Blink+Ketramose composite) adds another 6.5%, so the combined "target" is roughly 25% of the real meta right now, not 45%. That said, the matchup data gives a clear answer even under your hypothetical.
The strongest pick against that combined metagame is Devoted Combo. It posts 57.3% against Broodscale (129-96) and a neutral 51.2% against Goryo Reanimator (104-99). No other tier-1 deck combines positive equity on both sides of the target. Esper Blink itself is interesting: it crushes Goryo Reanimator at 61.2% (159-101) but loses to Broodscale at 47.4% (185-205), meaning it gets punished by the larger half of the expected field. Affinity has the opposite problem: a solid 60.8% vs Goryo (144-93) but a brutal 36.8% vs Broodscale (106-182), so it would be a liability. Prowess loses to both: 47.8% vs Broodscale and 45.3% vs Goryo, making it a hard pass. Azorius Control is similarly unfavorable against both targets (44.4% / 45.0%).
The short verdict: if you genuinely believe those two combo/reanimator strategies will dominate the room, Devoted Combo is the data-backed choice. It has positive equity on the bigger threat (Broodscale) and a near-coin-flip on the second, while maintaining a 51.9% overall meta winrate. If you want to hedge more aggressively toward the Goryo/Esper side, Affinity's 60.8% on that matchup is tempting, but the severe Broodscale weakness makes it a high-variance punt for a meta that heavy on the combo side.
Sources: Data from 172 Modern tournaments (62.8% MTGO, 37.2% Melee), covering 2026-07-23 to 2026-09-22.