Cheapest priced copy (Innistrad Remastered): $0.39 at Card Kingdom, near mint, their price list as of .
Ghoulish Procession 
Enchantment · Uncommon · Innistrad: Midnight Hunt · #102
Whenever one or more nontoken creatures die, create a 2/2 black Zombie creature token with decayed. This ability triggers only once each turn. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.39 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 102 | Uncommon | $0.49 | $4.99 |
| Innistrad Remastered | 110 | Uncommon | $0.39 | $0.49 |
| Innistrad Remastered | 378 | Uncommon | $0.79 | $4.49 |
| Innistrad: Midnight Hunt | 102 | Uncommon | $0.39 | $0.79 |
4 rulings from Wizards of the Coast
- 24 September 2021Decayed represents a static ability and a triggered ability. "Decayed" means "This creature can't block" and "When this creature attacks, sacrifice it at end of combat."
- 24 September 2021Decayed does not grant haste. Creatures with decayed that enter the battlefield during your turn may not attack until your next turn.
- 24 September 2021Once a creature with decayed attacks, it will be sacrificed at end of combat, even if it no longer has decayed at that time.
- 24 September 2021Decayed does not create any attacking requirements. You may choose not to attack with a creature that has decayed.