Wall of Tombstones

Creature — Wall - (uncommon)

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.)

Price

cardsphere 3.32

manapool 2.71

tcgplayer 3.46

cardmarket 3.3

cardkingdom 3.49