"Specter upgrade"@en . "120"^^ . . . "Tiberium catalyst is an upgrade that changes the Specter's shells, so that they leave a corrosive cloud of Tiberium gas upon impact, in addition to standard blast damage."@en . "1"^^ . . "Tiberium catalyst"@en . . "Rank 20"@en . . "Tiberium catalyst is an upgrade that changes the Specter's shells, so that they leave a corrosive cloud of Tiberium gas upon impact, in addition to standard blast damage."@en . "3"^^ . . . . "Specters receive Tiberium-laced shells"@en .