Otiluke's Acid Cloud (Evocation)

Level: 3
Range: 60 yds
Duration: 1 round/2 levels
Components: V, S, M
Casting Time: 3 segments
Saving Throw: Special
Area of Effect: 30' diameter globe

This spell creates a small
crystalline sphere filled with a yellowish-brown mist. The
crystal can be held for as long as the caster likes, but the
contents become useless after 3 rounds. The sphere can
be thrown up to 20 yards as a grenade-like missile. When
the sphere shatters, the mist is released, filling the air in a
30-foot radius with yellowish acid fumes. Everything within
the area of effect is affected as if placed in an acid bath.
All creatures within the fumes will take 4d4 points of acid
damage immediately, with no save allowed, and will suffer
1d4 points of damage for every additional round of exposure
to the fumes. All objects touched by the acid fumes
must make a saving throw versus acid or be eaten away.
For every additional round of exposure to the fumes, an
item must save again. The atmospheric acid bath will
remain in existence for one round for every two levels of
the caster, but any winds or rains or turbulent atmospheric
conditions will negate the spell.

MC: A small vial of diluted aqua regia (“royal water”).