Cheapest priced copy (Commander Legends): $0.49 at Card Kingdom, near mint, their price list as of .
Ghen, Arcanum Weaver 
Legendary Creature — Human Wizard · 2/3 · Rare · Commander Legends · #275
{R}{W}{B}, {T}, Sacrifice an enchantment: Return target enchantment card from your graveyard to the battlefield.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 275 | Rare | $0.49 | $0.49 |
| Commander Legends | 595 | Rare | — | — |
2 rulings from Wizards of the Coast
- 10 November 2020Because targets are chosen before costs are paid (such as the cost of sacrificing an enchantment), Ghen's ability can't target the enchantment you intend to sacrifice to activate its ability.
- 10 November 2020An Aura put onto the battlefield this way doesn't target anything (so it could be attached to an opponent's permanent with hexproof, for example), but the Aura's enchant ability restricts what it can be attached to. If the Aura can't legally be attached to anything, it remains in your graveyard.