Cheapest priced copy (Commander 2013): $0.35 at Card Kingdom, near mint, their price list as of .
Mnemonic Wall 
Creature — Wall · 0/4 · Common · Commander 2013 · #50
Defender
When this creature enters, you may return target instant or sorcery card from your graveyard to your hand.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
6 printings · $0.35 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 50 | Common | $0.35 | — |
| Conspiracy: Take the Crown | 116 | Common | $0.35 | $3.49 |
| Iconic Masters | 67 | Common | $0.35 | $0.49 |
| The List | IMA-67 | Common | $0.35 | — |
| Rise of the Eldrazi | 78 | Common | $0.35 | $4.49 |
| Theros | 55 | Common | $0.35 | $1.49 |