Vertigo

You warp the spatial dimensions immediately around a target, inflicting it with sensations of falling. Choose a Creature that you can see within range. The target must succeed on a Wisdom saving throw or its speed is reduced to 0 for the duration as the target becomes dizzy and the ground seems to drop away beneath its feet. On the start of each of its turns the target can make a Dexterity (Acrobatics) check against your spell save DC, gaining the Prone condition if it fails the check by 5 or more and ending the spell on itself on a success.

Creatures with flying speeds have advantage on all saves and checks against this spell.

Using a Higher-Level Spell Slot. You can target one additional Creature for each spell slot level above 1.