Each player has their own tailored deck based around the character class of your chosen investigator (these include the Guardian, Seeker, Mystic, Rogue, and Survivor)
If you're going first, you draw 5 cards in your opening hand
A Synchro Monster that used this card as a Synchro Material cannot be destroyed by battle
You can also view and play with other people's cubes: As you can see, the uploader can include the themes and archetypes they've included
A few cards that stand out to me are Azusa, Lost but Seeking, Earthcraft, and Exploration though
As someone who has only dabbled in TCG and never played Magic, I found the video super interesting and I love to hear people with expertise in a field talk about related disciplines they arent as familiar with.