Nuclear Isotope

Nuclear Isotopes are a Pre-Hardmode crafting component obtained by killing the Mutant Overseer and by killing Mutant Grunts.

Used to craft

 * Nuclear Cell Staff
 * Nuclear Beam Sword
 * Radioactive Helmet
 * Radioactive Mask
 * Radioactive Breastplate
 * Radioactive Leggings
 * Omega Isotope