Cheapest priced copy (Mirrodin Besieged): $0.99 at Card Kingdom, near mint, their price list as of .
Hero of Oxid Ridge 
Creature — Human Knight · 4/2 · Mythic · Mirrodin Besieged · #66
Haste
Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
Whenever this creature attacks, creatures with power 1 or less can't block this turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.99 to $8.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirrodin Besieged | 66 | Mythic | $0.99 | $8.99 |
2 rulings from Wizards of the Coast
- 1 June 2011The power of each creature is checked only when blocking creatures are declared. If a creature has power 1 or less at that time, it can’t block, even if its power was greater than 1 when the last ability resolved.
- 1 June 2011Creatures with power 1 or less can’t block even if they weren’t on the battlefield when the last ability resolved.