Cheapest priced copy (Onslaught): $0.35 at Card Kingdom, near mint, their price list as of .
Everglove Courier 
Creature — Elf · 2/1 · Uncommon · Onslaught · #262
You may choose not to untap this creature during your untap step.
{2}{G}, {T}: Target Elf creature gets +2/+2 and has trample for as long as this creature remains tapped.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Onslaught | 262 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 4 October 2004It checks the creature type when the ability is announced and resolved, but once the effect is placed on the creature, if its creature type changes the effect still continues.