--Feel Free to customize it however you want to :)
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local player = Players.LocalPlayer
local UpdateAim = ReplicatedStorage.NetworkComm.CharacterService.UpdateAimDirection_Signal
local StartSkill = ReplicatedStorage.NetworkComm.SkillService.StartSkilll_Method
local DamageCharacter = ReplicatedStorage.NetworkComm.CombatService.DamageCharacter_Method
-- You can change it if you want so
local killAuraEnabled = true
local killAuraRadius = 100 

local function getNpcsFolder()
	return workspace:FindFirstChild("Characters")
		and workspace.Characters:FindFirstChild("Server")
		and workspace.Characters.Server:FindFirstChild("NPCs")
end

local function getMyServerCharacter()
	local ok, char = pcall(function()
		return workspace.Characters.Server.Players:GetChildren()[1]
	end)
	return ok and char or nil
end

local function attackNpc(target, skillId)
	local myChar = getMyServerCharacter()
	local myHrp = myChar and myChar:FindFirstChild("HumanoidRootPart")
	local targetHrp = target and target:FindFirstChild("HumanoidRootPart")

	if not (myChar and myHrp and targetHrp) then return end

	local direction = (targetHrp.Position - myHrp.Position).Unit
	local origin = CFrame.new(myHrp.Position)
	local windowId = myChar.Name .. "_" .. skillId

	pcall(function()
		UpdateAim:FireServer(direction)
	end)

	pcall(function()
		StartSkill:InvokeServer(skillId, myChar, direction, {}, 1, 1)
	end)

	task.wait(0.3)

	pcall(function()
		DamageCharacter:InvokeServer(
			{ target },
			true,
			{
				Origin = origin,
				CanParry = true,
				WindowID = windowId,
				LocalCharacter = myChar,
				SkillID = skillId,
			}
		)
	end)
end

task.spawn(function()
	while true do
		if killAuraEnabled then
			local myChar = getMyServerCharacter()
			local myHrp = myChar and myChar:FindFirstChild("HumanoidRootPart")

			if myHrp then
				local npcsFolder = getNpcsFolder()
				if npcsFolder then
					local nearest, nearestDist = nil, killAuraRadius

					for _, npc in ipairs(npcsFolder:GetChildren()) do
						local hrp = npc:FindFirstChild("HumanoidRootPart")
						local hum = npc:FindFirstChildOfClass("Humanoid")

						if hrp and hum and hum.Health > 0 then
							local dist = (hrp.Position - myHrp.Position).Magnitude
							if dist < nearestDist then
								nearestDist = dist
								nearest = npc
							end
						end
					end

					if nearest then
						attackNpc(nearest, "Punch")
					end
				end
			end
		end

		task.wait(0.1)
	end
end)

return {
	enable = function() killAuraEnabled = true end,
	disable = function() killAuraEnabled = false end,
	setRadius = function(r) killAuraRadius = math.clamp(r, 10, 200) end,
	isEnabled = function() return killAuraEnabled end,
	getRadius = function() return killAuraRadius end,
}