Creature — Elemental Spirit 4/3, 4R (5)
Uncommon
Stone Spirit can't be blocked by creatures with flying.
"The spirit of the stone is the spirit of strength."
—Lovisa Coldeyes,
Balduvian Chieftain
Illus. Jeff A. Menges

5/1/2007: Creatures with the Reach ability (such as Giant Spider) can block this because they don’t actually have Flying.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander