Cheapest priced copy (Magic 2012): $0.99 at Card Kingdom, near mint, their price list as of .
Gideon's Avenger 
Creature — Human Soldier · 2/2 · Rare · Magic 2012 · #17
Whenever a creature an opponent controls becomes tapped, put a +1/+1 counter on this creature.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.99 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2012 | 17 | Rare | $0.99 | $2.49 |
One ruling from Wizards of the Coast
- 22 September 2011If an opponent's creature enters tapped, Gideon's Avenger's ability doesn't trigger.