Innate Spellcasting. The lampad's spellcasting ability is Charisma (+6 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

Corpse Stride. Once on its turn, the lampad can use 10 feet of its movement to step magically into one creature's corpse within its reach & emerge from a second creature's corpse within 60 feet of the first corpse, appearing in an unoccupied space within 5 feet of the second corpse. Both corpses must be Medium or bigger.

Immortal Nature. A lampad doesn't require food, drink, or sleep.

Magic Resistance. The lampad has advantage on saving throws against spells & other magical effects.