Cheapest priced copy (Duel Decks: Zendikar vs. Eldrazi): $0.35 at Card Kingdom, near mint, their price list as of .
Bloodthrone Vampire 
Creature — Vampire · 1/1 · Common · Modern Masters 2015 · #72
Sacrifice a creature: This creature gets +2/+2 until end of turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
7 printings · $0.35 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Zendikar vs. Eldrazi | 46 | Common | $0.35 | — |
| Magic 2011 | 85 | Common | $0.35 | $2.49 |
| Magic 2013 | 83 | Common | $0.35 | $1.49 |
| Modern Masters 2015 | 72 | Common | $0.35 | $0.79 |
| The List | ROE-98 | Common | $0.35 | — |
| URL/Convention Promos | 3 | Rare | — | $3.49 |
| Rise of the Eldrazi | 98 | Common | $0.35 | $2.49 |
2 rulings from Wizards of the Coast
- 15 June 2010If you sacrifice an attacking or blocking creature during the declare blockers step, it won't deal combat damage. If you wait until the combat damage step, but the creature you wish to sacrifice is dealt lethal damage, it'll be destroyed before you get a chance to sacrifice it.
- 15 June 2010You can sacrifice Bloodthrone Vampire to activate its own ability, but it won't be on the battlefield to get the bonus.