Cheapest priced copy (Eternal Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Lys Alana Scarblade 
Creature — Elf Assassin · 1/1 · Uncommon · Lorwyn · #122
{T}, Discard an Elf card: Target creature gets -X/-X until end of turn, where X is the number of Elves you control.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eternal Masters | 95 | Uncommon | $0.35 | $0.99 |
| Kaldheim Commander | 50 | Uncommon | $0.35 | — |
| Lorwyn | 122 | Uncommon | $0.35 | $4.49 |
One ruling from Wizards of the Coast
- 8 June 2016The number of Elves you control is counted only as Lys Alana Scarblade’s ability resolves. If Lys Alana Scarblade is still on the battlefield, it’ll count itself.