Rainbow Dark OTK. Can you help?

Question

I have like no idea how to make a Rainbow Dark OTK. i dont want turbo. i want it like a dark deck that can make the duel last for a bit, then in the middle of a duel or something, Rainbow Dark gets summon and (with like 15 darks in my grave, 7 removed to summon Rainbow Dark and 8 to remove so Rainbow Dark atk goes to 8000) attacks for a finish.

currently

3 armageddon knights

3 Demise, king of Armageddon

2 Phantom of Chaos

2 Rainbow Dark Dragon

1 Darklord Zerato

1 Dark Magician of Chaos

spells

Foolish Burial x2

Hand destruction x3

Traps

Escape from Dark Dimension x3

Return from Different Dimension x1

Any ideas would be fine. Thanks

Answer 1

Monsters(19)

3x Dark Rainbow Dragon

2x Demise,  King of Armageddon

2x Destiny Hero Plasma

2x Destiny Hero Dogma

2x Destiny Hero Dreadmaster

2x Dark Necrofear

1x Bezerk Dragon

1x Sky Scrouge Noreals

1x Dark Magician of Chaos

2x Phantom of Chaos

1x Treeborn Frog

Spells(21)

3x Destiny Draw

2x Allure of Darkness

3x Trade-In

3x Hand Destruction

1x Card Destruction

3x Recurring Nightmare

3x Reasoning

3x Monster Gate

Fast, Wins turn 1 or 2  or doesnt win at all