Cheapest priced copy (Lorwyn Eclipsed Commander): $0.79 at Card Kingdom, near mint, their price list as of .
Bane of Progress 
Creature — Elemental · 2/2 · Rare · Final Fantasy Commander · #299
When this creature enters, destroy all artifacts and enchantments. Put a +1/+1 counter on this creature for each permanent destroyed this way.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
7 printings · $0.79 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 137 | Rare | $1.49 | — |
| Commander 2015 | 175 | Rare | $1.29 | — |
| Commander Collection: Green | 3 | Rare | $1.79 | $10.99Out of stock |
| Commander Anthology | 91 | Rare | $1.49 | — |
| Lorwyn Eclipsed Commander | 99 | Rare | $0.79 | — |
| Final Fantasy Commander | 299 | Rare | $0.79 | $2.99 |
| The List | C15-175 | Rare | $1.29 | — |
2 rulings from Wizards of the Coast
- 17 October 2013Bane of Progress's ability destroys all artifacts and enchantments, including those you control.
- 17 October 2013If an artifact or enchantment isn't destroyed (perhaps because it has indestructible or it regenerated), it won't count toward the number of +1/+1 counters put on Bane of Progress. However, if an artifact or enchantment is destroyed but doesn't go to its owner's graveyard due to a replacement effect (like the one Rest in Peace creates), it will count.