Cheapest priced copy (Secrets of Strixhaven Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Witherbloom Command 
Sorcery · Rare · Strixhaven: School of Mages · #356
Choose two —
• Target player mills three cards, then you return a land card from your graveyard to your hand.
• Destroy target noncreature, nonland permanent with mana value 2 or less.
• Target creature gets -3/-1 until end of turn.
• Target opponent loses 2 life and you gain 2 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Strixhaven: School of Mages Promos | 248p | Rare | $0.79 | $0.79 |
| Strixhaven: School of Mages Promos | 248s | Rare | — | $1.79 |
| Secrets of Strixhaven Commander | 339 | Rare | $0.49 | — |
| Strixhaven: School of Mages | 248 | Rare | $0.49 | $0.79 |
| Strixhaven: School of Mages | 356 | Rare | $2.29 | $3.49 |
3 rulings from Wizards of the Coast
- 16 April 2021If at least one target is still legal as Witherbloom Command tries to resolve, it will resolve and do as much as it can.
- 16 April 2021If all of Witherbloom Command's targets are illegal as it tries to resolve, it will do nothing.
- 16 April 2021If you target yourself with the first mode, you may return any land card to your hand, including one you just milled or one that was already there.