Cheapest priced copy (Duel Decks: Knights vs. Dragons): $0.35 at Card Kingdom, near mint, their price list as of .
Paladin of Prahv 
Creature — Human Knight · 3/4 · Uncommon · Duel Decks: Knights vs. Dragons · #22
Whenever this creature deals damage, you gain that much life.
Forecast — {1}{W}, Reveal this card from your hand: Whenever target creature deals damage this turn, you gain that much life. (Activate only during your upkeep and only once each turn.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Knights vs. Dragons | 22 | Uncommon | $0.35 | — |
| Dissension | 14 | Uncommon | $0.35 | $0.49 |