Cool and fun video
Master Duel: Praise The Cube - YouTube
How to play the deck and what to know?
First of all, most of the Cubic monsters are useless. This is why I only use Vizam for his defensive effect and his Cubic Counters, Duza for milling, and of course Crimsom Nova because he's awesome.
The whole concept is to mill Cubic Carma then banish it to get a Crimson Nova from your deck. You can use Foolish Burial Goods, Duza (with summoner Monk for example), or Reasoning/Monster Gate to get it in the GY.
When you have 3 Crimson Nova in hand, link into Anaconda and use its effect to send Greater Poly into the GY. There you go you have the bestie Crimson Nova Trinity on the field.
Cubic Dharma or Summoner Monk can send Karma from the hand to the GY if you draw it. Dharma can also banish itself to retrieve a cubic monster from the GY.
Cubic Causality and Cubic Wave are the biggest OTK enablers for the deck especially if you have Nova Trinity on the field.
The rest of the cards are basically here to give you other possibilities if you can't get what you want. Feel free to modify it as you wish.
Extra Deck is linked to Super Poly, also you don't really need x3 Nova Trinity though.
Hope you can enjoy this deck as much as I do.