Cheapest priced copy (Shadows over Innistrad): $0.35 at Card Kingdom, near mint, their price list as of .
Loam Dryad 
Creature — Dryad Horror · 1/2 · Common · Shadows over Innistrad · #216
{T}, Tap an untapped creature you control: Add one mana of any color.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shadows over Innistrad | 216 | Common | $0.35 | $2.99Out of stock |
One ruling from Wizards of the Coast
- 8 April 2016You can tap any untapped creature you control, including one you haven’t controlled continuously since the beginning of your most recent turn, to pay the cost of Loam Dryad’s activated ability. You must have controlled Loam Dryad continuously since the beginning of your most recent turn, however.