Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Call the Bloodline 
Enchantment · Uncommon · Shadows over Innistrad · #103
{1}, Discard a card: Create a 1/1 black Vampire Knight creature token with lifelink. Activate only once each turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Friday Night Magic 2016 | 12 | Rare | — | $0.49 |
| The List | SOI-103 | Uncommon | $0.35 | — |
| Shadows over Innistrad | 103 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 8 April 2016You can activate Call the Bloodline’s ability once on each player’s turn, not just your own.