Since Liliana of the Veil is available in modern, players will never pick a more expensive Liliana, Waker of the Dead, so this one will only see play in standard, pioneer, and commander
Since Juri only cares about sacrificed permanents, it pairs naturally with Treasure, fetch lands, and anything else that sacrifices stuff for value
Don't worry, though, most of the cards you start with are not low-level
Your Extra Deck should consist of Xyz, Synchro, Fusion, or Link Monsters that complement your Main Deck strategy, while your Side Deck should contain cards that can counter specific threats or strategies you might face in a match
Artazon also serves a way to remove your opponents Stadium card from play, including especially hostile Stadium cards like Path to the Peak
Weakness / Resistance / Retreat Cost:Wx2 / / 1