Cheapest priced copy (Theros Beyond Death): $0.35 at Card Kingdom, near mint, their price list as of .
Entrancing Lyre 
Artifact · Uncommon · Theros Beyond Death · #233
You may choose not to untap this artifact during your untap step.
{X}, {T}: Tap target creature with power X or less. It doesn't untap during its controller's untap step for as long as this artifact remains tapped.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Theros Beyond Death | 233 | Uncommon | $0.35 | $0.49 |
6 rulings from Wizards of the Coast
- 24 January 2020Once Entrancing Lyre is no longer tapped, the creature won’t immediately become untapped.
- 24 January 2020If the target creature is an illegal target by the time Entrancing Lyre’s ability tries to resolve, the ability won’t resolve. The creature isn’t tapped and can untap as usual.
- 24 January 2020If Entrancing Lyre leaves the battlefield, it’s no longer tapped, so the creature is free to untap as usual.
- 24 January 2020If Entrancing Lyre becomes untapped before its activated ability resolves, the target creature is tapped, but it can untap as usual. This is true even if Entrancing Lyre becomes tapped again before the activated ability resolves.
- 24 January 2020If the target creature’s power is increased after Entrancing Lyre’s ability has resolved, it remains affected and won’t untap as usual.
- 24 January 2020Entrancing Lyre’s activated ability can target a creature that’s already tapped. That creature won’t untap for as long as Entrancing Lyre remains tapped.