Cheapest priced copy (Exodus): $0.35 at Card Kingdom, near mint, their price list as of .
Shackles 
Enchantment — Aura · Common · Exodus · #18
Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
{W}: Return this Aura to its owner's hand.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
2 printings · $0.35 to $0.79 at Card Kingdom
One ruling from Wizards of the Coast
- 4 October 2004Shackles does not tap the creature when it enters.