Wretched Withering

As the world around you turns dim, you pick a 70 foot sphere you can see within 120 feet of you. Every creature in that space must make a Strength saving throw or be brought to their knees as they wither away slowly. On a failed save, a creature will take 11d8 necrotic damage and be paralysed until the beginning of the Casters next turn, this save can be repeated on each turn, but that is the only action they can take. All plant life in this area immediately turns to ash and dies, and sentient plants have disadvantage on the saving throw. If an undead is in this space they have advantage on the saving throw. A creature that succeeds the saving throw takes half damage and is not paralysed.