You cause a robust bramble bush to sprout in a space on the ground you can see within range for the duration. The bush must be no larger than a 5-foot cube, but it can otherwise look like any thorned bush you want. The thicket has hit points equal to your spellcasting ability modifier and vulnerability to fire damage, and any creature within 5 feet of the bush has three-quarters cover against attacks from the other side of the bush. A creature in the chosen space when you cast this spell must succeed on a Dexterity saving throw or take 1d6 piercing damage. The creature is then pushed to an unoccupied space of its choice within 5 feet of the bush.    The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).