Cheapest priced copy (World Championship Decks 2000): $1.29 at Card Kingdom, near mint, their price list as of .
Crumbling Sanctuary 
Artifact · Rare · Mercadian Masques · #292
If damage would be dealt to a player, that player exiles that many cards from the top of their library instead.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $1.29 to $54.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mercadian Masques | 292 | Rare | $3.99 | $54.99 |
| World Championship Decks 2000 | jf292 | Rare | $1.29 | — |
2 rulings from Wizards of the Coast
- 4 October 2004If you have no cards in your library, then damage done to you will have no effect since it will get changed into a removal that can’t happen.
- 4 October 2004The ability affects all players.