![Mausoleum Secrets [Guilds of Ravnica]](https://cdn.shopify.com/s/files/1/0451/3388/9694/files/b6d2ab4e-d869-5365-977d-9f0008c2c843.jpg?v=1720245473)
Mausoleum Secrets [Guilds of Ravnica]
| Set: | Guilds of Ravnica |
| Type: | Instant |
| Rarity: | Rare |
| Cost: | 1B |
| Colors: | B |
Undergrowth — Search your library for a black card with mana value less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle.