Chromatic orb

The chromatic orb spell causes a 4-inch-diameter sphere to appear in the caster's hand. The sphere can appear in a variety of colors, with each color indicating a different special power. The caster can hurl the sphere at an opponent up to 30 yards away, providing there are no barriers between the caster and the target. If the chromatic orb misses its target, it dissipates without effect. Otherwise, the color of the orb determines the amount of damage inflicted and its special power: white's power is light, red's heat, orange's fire, yellow's blindness, green's stinking cloud, turquoise's magnetism, blue's paralysis, violet's petrification, and black's is death.

Note: Chromatic orb originally appeared in this form in The Complete Wizard's Handbook for the AD&D game from TSR. Its use here is for the purposes of providing context for the campaign only.