Cheapest priced copy (Invasion): $0.99 at Card Kingdom, near mint, their price list as of .
Blind Seer 
Legendary Creature — Human Wizard · 3/3 · Rare · Invasion · #47
{1}{U}: Target spell or permanent becomes the color of your choice until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.99 to $49.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Invasion | 47 | Rare | $0.99 | $49.99 |
One ruling from Wizards of the Coast
- 4 October 2004If you change the color of a spell which is to become a permanent, the permanent will retain the color change until the end of the turn.