"make a magic spell system that can bring up walls and can pick up rocks and throw them where the mouse clicks and also tween it so it looks realistic also make it so they have to press a key to activate the spell"

-- local script 
local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local spellKey = Enum.KeyCode.F
local spellActive = false

mouse.Button1Down:Connect(function()
	if spellActive then
		local targetPosition = mouse.Hit.p
		local rock = script.Parent
		local tweenInfo = TweenInfo.new(
			1,
			Enum.EasingStyle.Quad,
			Enum.EasingDirection.Out
		)
		local tween = TweenService:Create(
			rock,
			tweenInfo,
			{Position = targetPosition}
		)
		tween:Play()
	end
end)

player.CharacterAdded:Connect(function(character)
	local humanoid = character:WaitForChild("Humanoid")
	humanoid.Died:Connect(function()
		spellActive = false
	end)
end)

mouse.KeyDown:Connect(function(key)
	if key == spellKey then
		spellActive = true
		local wall = script.Parent
		wall.Position = wall.Position + Vector3.new(0, 10, 0)
	end
end)

mouse.KeyUp:Connect(function(key)
	if key == spellKey then
		spellActive = false
		local wall = script.Parent
		wall.Position = wall.Position + Vector3.new(0, -10, 0)
	end
end)