Cheapest priced copy (Lorwyn): $0.35 at Card Kingdom, near mint, their price list as of .
Blind-Spot Giant 
Creature — Giant Warrior · 4/3 · Common · Lorwyn · #153
This creature can't attack or block unless you control another Giant.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn | 153 | Common | $0.35 | $0.49 |
| Modern Masters | 105 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 7 June 2013Blind-Spot Giant checks if you control another Giant only as you declare it as an attacking or blocking creature. Once you do, if you lose control of your other Giants, Blind-Spot Giant won’t stop attacking or blocking.