Cheapest priced copy (Future Sight): $0.35 at Card Kingdom, near mint, their price list as of .
Witch's Mist 
Enchantment · Uncommon · Future Sight · #92
{2}{B}, {T}: Destroy target creature that was dealt damage this turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Future Sight | 92 | Uncommon | $0.35 | $1.99 |
2 rulings from Wizards of the Coast
- 1 May 2007If all damage that would be dealt to a creature is prevented, no damage is actually dealt and that creature can’t be targeted by Witch’s Mist.
- 1 May 2007If a creature is lethally damaged and regenerates, all damage is removed from that creature. But since it was actually dealt damage earlier in the turn, it can be targeted by Witch’s Mist.