Use Ryu Okami to OTK. Give control of it to your opponent than special summon. Special summoning will trigger Ryu Okami's effect allowing you t0 send a card from your extra deck to the graveyard. Send Cyber Dragon Nova, which will let you special summon from the extra deck, which will trigger Ryu Okami's effect again, etc.
Main Combo
You will need the following:
- Ryu Okami in your GY
- Give And Take Set on the field
- Photon Sanctuary in your hand
First activate Photon Santuary which gives you 2 tokens. Than activate Give and Take which will special summon the Ryu Okami in your GY to your opponent's field. It will also change the level of one of your tokens but that doesn't matter. Link away your tokens and make Hip Hoshiningen. This will trigger Ryu Okami's effect allowing you to send Cyber Dragon Nova to your GY which will allow you to special summon Cyber End Dragon which will trigger Ryu Okami again and again. You can summon up to 3 Cyber End Dragons, but the third one will also trigger Ryu Okami. At this point you have 2 more options:
- If you have Felgrand in grave, you can send Prank-Kids Battle Butler to grave which will special summon felgrand.
- You can send Elder Entity N'tss which can destroy a card on the field when sent to your GY.