How to add kill effect in sword?

Hello! The idea is when you kill somebody with linked sword the script checks humanoid's health and if its under 0 the kill effect occurs. I know how to make it with classic ROBLOX sword, but sword I'm using is scripted differently and I just cant understand it. Can somebody pls help me!!

Swords damage function:

local function IsAlive(Plr)
	local Humanoid = Plr.Character:FindFirstChild("Humanoid")
	
	return (Humanoid and Humanoid.Health > 0)
end

local function onTouched(Hit)	
	local Other = Hit.Parent:FindFirstChild("Humanoid")
	if Other then
		local Arm = Tool.Parent:FindFirstChild("Right Arm")
		if Arm then
			local Grip = Arm:FindFirstChild("RightGrip")
			if (Grip and (Grip.Part0 == Arm or Grip.Part1 == Sword)) then
				local O_Player = Players:GetPlayerFromCharacter(Hit.Parent)	
				if O_Player then
					local S_Player = Players:GetPlayerFromCharacter(Tool.Parent)
					if (IsAlive(S_Player)) then
						if (S_Player) then
							TagHumanoid(S_Player, Other)						
						end
					end
				else
					Other:TakeDamage(damage)
				end
			end
		end
	end
end

Kill effect:

	if character:FindFirstChild("Humanoid").Health <= 0 then
		
	end