Cheapest priced copy (Onslaught): $7.99 at Card Kingdom, near mint, their price list as of .
Ebonblade Reaper 
Creature — Human Cleric · 1/1 · Rare · Onslaught · #141
Whenever this creature attacks, you lose half your life, rounded up.
Whenever this creature deals combat damage to a player, that player loses half their life, rounded up.
Morph {3}{B}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $7.99 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Onslaught | 141 | Rare | $7.99 | $15.99 |
One ruling from Wizards of the Coast
- 1 February 2007If you attempt to halve a negative life total, you halve 0. This means that the life total stays the same. A life total of -10 would remain -10.