Cheapest priced copy (Fallen Empires): $0.35 at Card Kingdom, near mint, their price list as of .
Thelonite Druid 
Creature — Human Cleric Druid · 1/1 · Uncommon · Fallen Empires · #78
{1}{G}, {T}, Sacrifice a creature: Forests you control become 2/3 creatures until end of turn. They're still lands.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fallen Empires | 78 | Uncommon | $0.35 | — |
5 rulings from Wizards of the Coast
- 4 October 2004Can sacrifice the Druid to itself.
- 4 October 2004The land animation ability does not wear off if the land stops being a Forest. It continues until the end of the turn.
- 4 October 2004The most recent land animating ability takes precedence.
- 4 October 2004Only affects Forests that are on the battlefield when the effect resolves.
- 1 August 2008A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn’t matter how long the permanent has been a creature.