Cheapest priced copy (Eventide): $20.99 at Card Kingdom, near mint, their price list as of .
Crumbling Ashes 
Enchantment · Uncommon · Eventide · #35
At the beginning of your upkeep, destroy target creature with a -1/-1 counter on it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $20.99 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eventide | 35 | Uncommon | $20.99 | $44.99 |
3 rulings from Wizards of the Coast
- 1 August 2008If the targeted creature loses all its -1/-1 counters by the time the ability resolves, the ability won’t resolve because its only target is illegal. The creature won’t be destroyed.
- 1 August 2008This ability is mandatory. If you’re the only player who controls a creature with a -1/-1 counter on it as your upkeep begins, you must target one of your own creatures.
- 1 August 2008You can’t target a creature unless it already has a -1/-1 counter on it as your upkeep begins. Putting a -1/-1 counter on a creature during your upkeep won’t let Crumbling Ashes destroy it that turn.