Cheapest priced copy (Eldritch Moon): $0.35 at Card Kingdom, near mint, their price list as of .
Furyblade Vampire 
Creature — Vampire Berserker · 1/2 · Uncommon · Eldritch Moon · #128
Trample
At the beginning of combat on your turn, you may discard a card. If you do, this creature gets +3/+0 until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 128 | Uncommon | $0.35 | $0.49 |
| Innistrad Remastered | 155 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 13 July 2016While resolving Furyblade Vampire’s triggered ability, you can’t discard multiple cards to multiply the bonus.