just search with Impcantations for Chaos MAX, use Shien's Spy to give a 0ATK/0DEF Impcantation to your opponent, swing into it for 8K damage.
Shien's Spy can also be used to hand off one of your ritual monsters for Chaos Max to swing into, since they also have 0 DEF. On top of this, you can just hand off the only Impcantation on your field (besides Chalislime) so you can unlock your Extra Deck until the end of the turn.
If you draw a BEWD, it helps to discard it with Trade-in or Chalislime so you can just banish it with Chaos Form, or use 2 Impcantations to tribute summon it then XYZ with another level 8 into Draglubion. I recommend summoning Neo-Galaxy Eyes with its effect.
Normally the best/easiest card to ritual summon with it Advanced Ritual art, especially for the non-MAX Dragon.
Make sure to ALWAYS ritual non-MAX with a BEWD, so you can use its effect which helps you beat over big monsters.
Happy Summoning!