Zombie head
Medium XP lamp (The Bird and the Beast) was removed from RuneScape after an update, but still exists in-game for those who had obtained it.
[FAQ] • [doc]
Medium XP lamp detail

Medium XP lamps were obtained by turning in 7,000 renown during the second world event, the Bird and the Beast. It rewards 94% of the experience of a medium prismatic lamp for most skills, however certain skills (such as Divination, Strength and Defence) receive 108.1% experience instead. A bronze Armadylean token or a bronze Bandosian token is required to purchase the lamp.