Madurai Transmute Core is a special Core that can be used as an ingredient in Transmutation. When transmuted alongside other Mods, the core ensures that the resulting Mod will be of Madurai Polarity. Using a Transmutation Core also removes the credit cost for that transmutation, allowing for cheaper attempts at transmuting Rare-quality Mods. Transmutation Cores do not guarantee the rarity of the resulting mod, only their polarity.
Transmutation Cores can be bought from Cephalon Simaris for 10,000 each.