History of Biosphere Explorer Mark

Overview

Biosphere Explorer Mark is a Legendary Titan Mark Titan Mark from the Biosphere Explorer set, a Titan ritual armor set introduced with Season of the Witch. Its flavor text reads, "Each deadly encounter gifts a lesson."

Acquisition

Pieces of the Biosphere Explorer set drop one at a time as Universal Ornaments from Vanguard Ops, Crucible (including Iron Banner and Trials of Osiris), and Gambit playlist activities. The set is not sold as a whole, so duplicates are common.