Cheapest priced copy (Lorwyn Eclipsed Commander): $1.29 at Card Kingdom, near mint, their price list as of .
Flourishing Defenses 
Enchantment · Uncommon · Lorwyn Eclipsed Commander · #107
Whenever a -1/-1 counter is put on a creature, you may create a 1/1 green Elf Warrior creature token.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $1.29 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn Eclipsed Commander | 107 | Uncommon | $1.29 | — |
| Shadowmoor | 114 | Uncommon | $2.29 | $22.99 |
2 rulings from Wizards of the Coast
- 1 May 2008This ability triggers once for each -1/-1 counter. For example, if Leech Bonder (a creature that enters with two -1/-1 counters on it) entered, Flourishing Defenses's ability would trigger twice.
- 1 May 2008This ability triggers both when a -1/-1 counter is put on a creature on the battlefield and when a creature enters with a -1/-1 counter on it. This includes when a creature returns to the battlefield as a result of persist.