THIS IS A GOING SECOND DECK!
Try to pull a Lonefire blossom, Predaplant Ophrys or a brilliant Fusion. If you pull that you can easily do your full combo.
After the full combo with Gem Knight Seraphinite, try to summon a Saryuja.
You can use the normal monsters that are special summoned through Draconnet and The Agent of Creation - Venus, to summon your Imduk as a material for Link monsters. Or your 5 Headed Dragon.
The point of this deck is to summon your Buster-Dragon in DEF position, to make all enemy cards to Dragons. With your Super Polimerization, you can now use all the enemies monsters to Fusion summon your 5 Headed Dragon and FTK him.
Have Fun.