Cheapest priced copy (Commander Legends): $21.99 at Card Kingdom, near mint, their price list as of .
Sigarda's Aid 
Enchantment · Rare · Eldritch Moon Promos · #41p
You may cast Aura and Equipment spells as though they had flash.
Whenever an Equipment you control enters, you may attach it to target creature you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $21.99 to $74.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 384 | Rare | $21.99 | — |
| Eldritch Moon | 41 | Rare | $27.99 | $37.99 |
| Eldritch Moon Promos | 41p | Rare | $37.99 | $49.99 |
| Eldritch Moon Promos | 41s | Rare | — | $42.99 |
| Secret Lair Drop | 731 | Rare | — | $74.99 |
| Secret Lair Drop (Captain America's Aid) | 1727 | Rare | $27.99 | $29.99 |