Cheapest priced copy (Invasion): $0.35 at Card Kingdom, near mint, their price list as of .
Whip Silk 
Enchantment — Aura · Common · Invasion · #225
Enchant creature
Enchanted creature has reach. (It can block creatures with flying.)
{G}: Return this Aura to its owner's hand.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern