Cheapest priced copy (Innistrad): $0.49 at Card Kingdom, near mint, their price list as of .
Heretic's Punishment 
Enchantment · Rare · Innistrad · #147
{3}{R}: Choose any target, then mill three cards. This enchantment deals damage to that permanent or player equal to the greatest mana value among the milled cards.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad | 147 | Rare | $0.49 | $0.49 |
4 rulings from Wizards of the Coast
- 22 September 2011The mana value of a double-faced card in your graveyard is the mana value of the front face.
- 22 September 2011If you have two or fewer cards in your library when the ability resolves, all of them will be put into your graveyard. Heretic's Punishment will still deal damage equal to the highest mana value among those cards.
- 22 September 2011If all three cards have a mana value of 0, no damage will be dealt.
- 22 September 2011If the targeted permanent or player is an illegal target by the time the ability resolves, the entire ability won't resolve. No cards will be put into your graveyard, and no damage will be dealt.