Cheapest priced copy (Commander 2014): $3.49 at Card Kingdom, near mint, their price list as of .
Malicious Affliction 
Instant · Rare · Eternal Masters · #96
Morbid — When you cast this spell, if a creature died this turn, you may copy Malicious Affliction and may choose a new target for the copy.
Destroy target nonblack creature.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $3.49 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2014 | 25 | Rare | $3.49 | — |
| Eternal Masters | 96 | Rare | $3.49 | $10.99 |
2 rulings from Wizards of the Coast
- 8 June 2016The copy will have the same target as the original spell unless you choose a new one. You don’t have to change this target if you don’t want to or can’t choose a new legal target (perhaps because there are no other nonblack creatures on the battlefield).
- 8 June 2016The copy of Malicious Affliction is created on the stack. It’s not cast, so the copy won’t cause the morbid ability to trigger again.