Incendiary Jelly (3.5e Spell)

Reprinted with permission

All jelly within the spell's area turns into gelatinous fire. The fire cannot be extinguished by nonmagical means. Any creature or object that comes in contact with the jelly takes 1d6 damage and risks catching fire. When the spell ends, the jelly returns to its previous state.

Material Component: a bit of pitch and quicklime.