Undergrowth - Search your library for a black card with converted mana cost less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle your library.
|Vintage Cube||Not in Cube|
|Legacy Cube||Not in Cube|
|Modern Cube||Not in Cube|
|GRN||R||Guilds of Ravnica||$ 1.53|