Jund Midrange is likely what's being called "Jund Wildfires" by the community. Let me verify by checking its key cards, then run the three-way split.
Confirmed - Jund Midrange is the "Jund Wildfires" archetype (Cleansing Wildfire is a key card). Now let me run the three-way split.
Here are the results across the last six months of Pauper Jund Wildfires (tracked in the database as Jund Midrange) data:
Cast Down only: 617 entries, 49.9% winrate (1374W / 1378L)
Both Cast Down and Galvanic Blast: 99 entries, 49.2% winrate (228W / 235L)
Galvanic Blast only: 4 entries, 29.4% winrate (5W / 12L)
The Cast Down-only builds come out on top, though the margin over the "both" builds is razor-thin (just 0.7 percentage points) and both are effectively at 50%. The Galvanic Blast-only result is a hard discard given only 4 data points -- that sample is far too small to draw any conclusions from.
The practical takeaway is that the vast majority of the field (617 entries) runs Cast Down as their primary single-target removal with no Galvanic Blast, and this is the configuration that performs around the field average. The small cohort splashing both spells performs nearly identically, so there's no meaningful performance signal pushing players toward or away from Galvanic Blast as a supplement to Cast Down.
Sources: Data from 261 Pauper tournaments (Sept 2025 - Mar 2026), split roughly 48% Melee, 44% MTGO, 8% Cardsrealm.