Cheapest priced copy (Apocalypse): $0.99 at Card Kingdom, near mint, their price list as of .
Ice Cave 
Enchantment · Rare · Apocalypse · #24
Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell. (Mana cost includes color.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.99 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Apocalypse | 24 | Rare | $0.99 | $44.99 |
| The List | APC-24 | Rare | $1.49 | — |
One ruling from Wizards of the Coast
- 4 October 2004The mana cost does not include cost increases or reductions.