Cheapest priced copy (Innistrad: Crimson Vow): $0.69 at Card Kingdom, near mint, their price list as of .
Curse of Hospitality 
Enchantment — Aura Curse · Rare · Innistrad: Crimson Vow · #152
Enchant player
Creatures attacking enchanted player have trample.
Whenever a creature deals combat damage to enchanted player, that player exiles the top card of their library. Until end of turn, that creature's controller may play that card and they may spend mana as though it were mana of any color to cast that spell.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.69 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 419 | Rare | $1.79 | $4.49 |
| Innistrad: Crimson Vow Promos | 152s | Rare | — | $1.49 |
| Innistrad: Crimson Vow | 152 | Rare | $0.69 | $0.99 |
| Innistrad: Crimson Vow | 377 | Rare | $1.29 | $0.99 |
One ruling from Wizards of the Coast
- 19 November 2021Curse of Hospitality's triggered ability triggers once for each creature that dealt combat damage to the enchanted player.