According to the immortal cultivation system of this world, even without a fire spiritual root, one can still practice fire-type spells; the same holds true for single-element water, earth, wood, and gold spiritual roots.
However, without an ice spiritual root, lightning spiritual root, wind spiritual root, or dark spiritual root, it is practically impossible to practice spells corresponding to these mutated spiritual roots.
Of course, talismans made from these spells could be used by anyone with Dharma Power.
Chapter 19