Cheapest priced copy (Shards of Alara): $4.49 at Card Kingdom, near mint, their price list as of .
Sarkhan Vol 
Legendary Planeswalker — Sarkhan · Mythic · Modern Masters · #183
+1: Creatures you control get +1/+1 and gain haste until end of turn.
−2: Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.
−6: Create five 4/4 red Dragon creature tokens with flying.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $3.99 to $17.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shards of Alara | 191 | Mythic | $4.49 | $17.99 |
| Modern Masters | 183 | Mythic | $4.99 | $9.99 |
| Secret Lair Drop | 1144 | Mythic | $4.49 | $3.99 |
3 rulings from Wizards of the Coast
- 1 October 2008Sarkhan Vol’s first ability affects only creatures you control when that ability resolves.
- 1 October 2008You may activate the first ability even if you control no creatures. Sarkhan Vol gains a loyalty counter, but the ability will have no effect.
- 1 October 2008You may target any creature with the second ability, not just a creature an opponent controls. If you target a creature you already control, you’ll gain control of it (which will usually have no visible effect), it’ll untap, and it’ll gain haste until end of turn.