Cheapest priced copy (Secrets of Strixhaven Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Pox Plague 
Sorcery · Rare · Secrets of Strixhaven · #328
Each player loses half their life, then discards half the cards in their hand, then sacrifices half the permanents they control of their choice. Round down each time.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Secrets of Strixhaven Promos | 94p | Rare | $0.49 | $0.49 |
| Secrets of Strixhaven | 94 | Rare | $0.49 | $0.49 |
| Secrets of Strixhaven | 328 | Rare | $0.49 | $0.79 |