Pet Monster is a Universal Item from the Tools of Hero Kind expansion.
Rulings[]
As soon as this Hero enters your dungeon, deactivate the first Monster Room in your dungeon until end of turn. If the first Room of your dungeon is a Monster Room, this triggers before the Room’s ability or damage can take effect and the Hero moves on to the next Room.
Trivia[]
This card appears to be a parody of "pet monster" games like Pokemon and Digimon.