Cheapest priced copy (Chronicles): $0.35 at Card Kingdom, near mint, their price list as of .
Wall of Shadows 
Creature — Wall · 0/1 · Common · Legends · #128
Defender (This creature can't attack.)
Prevent all damage that would be dealt to this creature by creatures it's blocking.
This creature can't be the target of spells that can target only Walls or of abilities that can target only Walls.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Chronicles Foreign Black Border | 41 | Common | — | — |
| Chronicles | 41 | Common | $0.35 | — |
| Legends | 128 | Common | $0.49 | — |
One ruling from Wizards of the Coast
- 4 October 2004Can be targeted by a modal spell that can target a non-Wall in one of its modes, even if it has a mode that targets only Walls. That spell can, in theory, target a non-Wall, so it is not a “spell that can target only Walls”.