Cheapest priced copy (Commander Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Nessian Wanderer 
Creature — Satyr Scout · 1/3 · Uncommon · Theros Beyond Death · #183
Constellation — Whenever an enchantment you control enters, look at the top three cards of your library. You may reveal a land card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 905 | Uncommon | $0.35 | — |
| Theros Beyond Death | 183 | Uncommon | $0.35 | $0.79 |
2 rulings from Wizards of the Coast
- 24 January 2020An Aura spell that has an illegal target when it tries to resolve doesn’t resolve and is instead put into its owner’s graveyard. It doesn’t enter the battlefield, so constellation abilities don’t trigger.
- 24 January 2020A constellation ability triggers whenever an enchantment enters the battlefield under your control for any reason. Enchantments with other card types, such as enchantment creatures, will also cause constellation abilities to trigger.