Cheapest priced copy (Duel Decks: Phyrexia vs. the Coalition): $0.59 at Card Kingdom, near mint, their price list as of .
Treva, the Renewer 
Legendary Creature — Dragon · 6/6 · Rare · Invasion · #280
Flying
Whenever Treva deals combat damage to a player, you may pay {2}{W}. If you do, choose a color, then you gain 1 life for each permanent of that color.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.59 to $129.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Phyrexia vs. the Coalition | 49 | Rare | $0.59 | — |
| Invasion | 280 | Rare | $2.49 | $129.99 |
| Pro Tour Promos | 2009 | Rare | — | $37.99 |
One ruling from Wizards of the Coast
- 4 October 2004You choose the color during resolution. This means your opponent does not get to react after knowing the color you chose.