Cheapest priced copy (Zendikar): $0.35 at Card Kingdom, near mint, their price list as of .
Guul Draz Vampire 
Creature — Vampire Rogue · 1/1 · Common · Zendikar · #93
As long as an opponent has 10 or less life, this creature gets +2/+1 and has intimidate. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Zendikar | 93 | Common | $0.35 | $1.49 |
2 rulings from Wizards of the Coast
- 1 October 2009If an attacking creature has intimidate, what colors it is matters only as the defending player declares blockers. Once it’s blocked, changing its colors won’t change that.
- 1 October 2009Intimidate looks at the current colors of a creature that has it. Normally, if Guul Draz Vampire has intimidate, it can’t be blocked except by artifact creatures and/or black creatures. If it’s turned white, then it can’t be blocked except by artifact creatures and/or white creatures.