Cheapest priced copy (Duel Decks: Heroes vs. Monsters): $0.35 at Card Kingdom, near mint, their price list as of .
Pay No Heed 
Instant · Common · Magic 2014 · #27
Prevent all damage a source of your choice would deal this turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Heroes vs. Monsters | 19 | Common | $0.35 | — |
| Magic 2014 | 27 | Common | $0.35 | $0.49 |
| Torment | 12 | Common | $0.35 | $0.99 |
2 rulings from Wizards of the Coast
- 1 July 2013If the chosen source is a permanent spell, damage dealt later in the turn by the permanent it becomes will also be prevented.
- 1 July 2013Pay No Heed doesn’t target anything. You can choose a source with hexproof, for example. You choose the damage source as Pay No Heed resolves.