Skullcage

Artifact - (uncommon)

At the beginning of each opponent's upkeep, Skullcage deals 2 damage to that player unless they have exactly three or exactly four cards in hand.

Only a focused mind can survive it.

Price

tcgplayer 0.31

cardmarket 0.22

cardkingdom 0.39

cardsphere 0.33

manapool 0.17