Tolodine's killing wind

Tolodine's killing wind was a spell of epic magic.

History and Power
This spell was invented by the Netherese arcanist Tolodine in 1500 NY (&minus;2359 DR), one year before his death, as his crowning achievement. It had the distinction of being the first epic spell developed by the Netherese. It could no longer be cast after Mystra changed the rules governing magic after Karsus's Folly in -339 DR, the Year of Sundered Webs. This spell has immensely horrendous effects on people affected this spell is made by a cloud in a bottle mixed with an acid vial then thrown at the initial area on contact the glass breaks and releases a 10x10 cloud that is moved by the wind. anything that touches the cloud must make a con saving throw on a success take 25d12 acid damage. this cloud lasts for 1d4 hours. to acquire the power one must cast wish twice within a ten-foot area to temporarily 'distract the weave' then must be thrown as a bonus action.