Zombie head
Large 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.
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Large XP lamp detail

Large XP lamps were obtained by turning in 13,000 renown during the second world event, the Bird and the Beast. It rewards 95% of the experience of a large prismatic lamp for most skills, however certain skills (such as Divination, Strength and Defence) receive 109.25% experience instead. A silver Armadylean token or a silver Bandosian token is required to purchase the lamp.