Starforged: Mark of Brood Brothers Dragon Pin

"Brood Brothers" is the name given by a Genestealer Cult's members to normal Humans who have been infected with the xenos genetic material of a Genestealer Patriarch through its ovipositor.
This infection makes these people members of the cult's collective psychic Broodmind as well as the potential parents of a new generation of Genestealer hybrids.