Consecrated Ground

 Use the Holy Water to make a 60' perimeter of Consecrated Ground. Undead, fiends, devils, and demons with a CR of 5 or lower that try to pass the perimeter will instantly perish. Undead, fiends, devils, and demons with a CR of 10 or lower that are not destroyed will be repelled and take 10-D10 of holy damage. Undead, fiends, devils, and demons with a CR of 11+ can enter but will take the 10-D10 holy damage at the start of every round and has disadvantage on all actions. Players have advantage on all actions against undead, fiends, devils, and demons in the perimeter. Add 2-D10 for every level above 6.