Cheapest priced copy (The Dark): $0.59 at Card Kingdom, near mint, their price list as of .
Tangle Kelp 
Enchantment — Aura · Uncommon · The Dark · #37
Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step if it attacked during its controller's last turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Dark | 37 | Uncommon | $0.59 | — |