For I loop for parts acting weirdly?

I was testing out my script and I thought of an idea to have a move I want to make, and the cylinder that fades out is supposed to happen while the twister and the black circle are increasing in size, so I put them in a for i loop. The weird thing is, is that first the black circle and twister just pop out of nowhere, the cylinder changes, and then the black circle and twister change.

Here's a GIF of what I mean: https://gyazo.com/408a6be6df739e9473763b3bf12f27c2

My script, don't mind the unused variables, I'll use them later once this problem is fixed:

local TS = game:GetService("TweenService")


game.ReplicatedStorage.ShadowMagic.ShadowR.OnServerEvent:Connect(function(plr)

    local char = plr.Character


    local Shockwave = game.Workspace.Shockwave:Clone()
    Shockwave.Parent = game.Workspace
    Shockwave.CFrame = plr.Character.Torso.CFrame
    Shockwave.Anchored = true
    Shockwave.CanCollide = false
    Shockwave.Transparency = 1
    Shockwave.Mesh.Scale = Vector3.new(0,0,0)

    local twister = game.Workspace.Twister:Clone()
    twister.Parent = game.Workspace
    twister.Size = Vector3.new(0,0,0)
    twister.CFrame = plr.Character.Torso.CFrame
    twister.Transparency = 1

    local bottom = workspace.ShadowCylinder:Clone()
    bottom.Size = Vector3.new(0.5,0,0)
    bottom.Anchored = true
    bottom.CanCollide = false
    bottom.CFrame = char.Torso.CFrame + Vector3.new(0,-2.5,0)
    bottom.Parent = workspace
    bottom.Orientation = Vector3.new(0,0,90)


    local Cylinder = bottom:Clone()
    Cylinder.Size = Vector3.new(0.5,20,20)
    Cylinder.Position = plr.Character.Torso.Position + Vector3.new(0,-2,0)
    Cylinder.Anchored = true
    Cylinder.CanCollide = false
    Cylinder.Transparency = 0.2
    Cylinder.Material = "SmoothPlastic"
    Cylinder.Parent = game.Workspace
    Cylinder.Name = "ShadCyl"






    for i = 1,20 do
        bottom.Size = bottom.Size + Vector3.new(0,1,1)


        twister.Size = twister.Size + Vector3.new(4.5,1,4.5)
        twister.Transparency = twister.Transparency - 0.0085

        if i == 10 then



        for i = 1,25 do

            Cylinder.Size = Cylinder.Size + Vector3.new(6,-2,-2)
            Cylinder.Transparency = Cylinder.Transparency + 0.05
            wait()



        end




        end











        wait()
    end

    local Cloud = game.ReplicatedStorage.ShadowMagic.Cloud:Clone()
    Cloud.Size = Vector3.new(0,0,0)


    for i = 0,1,.1 do

        Shockwave.Transparency = i
        Shockwave.Mesh.Scale  = Shockwave.Mesh.Scale + Vector3.new(3,.7,3)

        wait()
    end










end)