Cheapest priced copy (Urza's Legacy): $0.35 at Card Kingdom, near mint, their price list as of .
Weatherseed Elf 
Creature — Elf · 1/1 · Common · Urza's Legacy · #115
{T}: Target creature gains forestwalk until end of turn. (It can't be blocked as long as defending player controls a Forest.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Urza's Legacy | 115 | Common | $0.35 | $5.99 |