The Lady in Wight (LODT-EN038) - Light of Destruction (2020 Date Reprint) Unlimited

Face-up Level 3 or lower Zombie-Type monsters you control, except "The Lady in Wight", cannot be destroyed by battle and are unaffected by the effects of Spell and Trap Cards. This card's name is treated as "Skull Servant" while it is in the Graveyard.