Cheapest priced copy (Legions): $0.99 at Card Kingdom, near mint, their price list as of .
Tribal Forcemage 
Creature — Elf Wizard · 1/1 · Rare · Legions · #142
Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, creatures of the creature type of your choice get +2/+2 and gain trample until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.99 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Legions | 142 | Rare | $0.99 | $22.99 |
One ruling from Wizards of the Coast
- 4 October 2004The trigger occurs when you use the Morph ability to turn the card face up, or when an effect turns it face up. It will not trigger on being revealed or on leaving the battlefield.