Wall of Tombstones
Wall of Tombstones {1}{B}
Creature - Wall | Power/Toughness: 0 / 1
Defender (This creature can't attack.)
At the beginning of your upkeep, change Wall of Tombstones's base toughness to 1 plus the number of creature cards in your graveyard. (This effect lasts indefinitely.)
Latest set: [LEG] Legends ( U · #129 )