Cheapest priced copy (Secrets of Strixhaven Commander): $3.49 at Card Kingdom, near mint, their price list as of .
Drumbellower 
Creature — Spirit · 2/1 · Rare · Secrets of Strixhaven Commander · #143
Flying
Untap all creatures you control during each other player's untap step.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $3.49 to $6.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Neon Dynasty Commander | 6 | Rare | $3.99 | — |
| Neon Dynasty Commander | 40 | Rare | $6.49 | — |
| Secrets of Strixhaven Commander | 143 | Rare | $3.49 | — |
2 rulings from Wizards of the Coast
- 18 February 2022Other effects can prevent a creature from untapping during an untap step. You do need to look carefully, however, as many effects say that the creature doesn't untap during its controller's untap step, and this card's ability applies during other players' untap steps. If a card does say this, then Drumbellower can untap it.
- 18 February 2022All your creatures untap during each other player's untap step. You have no choice about what untaps.