Added Missing Content; Complete Reorganization

Spells/Sleet Storm.md

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+### Sleet Storm
+
+*3rd-level conjuration*
+
+**Casting Time:** 1 action
+
+**Range:** 150 feet
+
+**Components:** V, S, M (a pinch of dust and a few drops of water)
+
+**Duration:** Concentration, up to 1 minute
+
+Until the spell ends, freezing rain and sleet fall in a 20-foot tall cylinder with a 40-foot radius centered on a point you choose within range. The area is heavily obscured, and exposed flames in the area are doused.
+
+The ground in the area is covered with slick ice, making it difficult terrain. When a creature enters the spell's area for the first time on a turn or starts its turn there, it must make a Dexterity saving throw. On a failed save, it falls prone.
+
+If a creature starts its turn in the spell's area and is concentrating on a spell, the creature must make a successful Constitution saving throw against your spell save DC or lose concentration.