How do you build a vanguard deck?

To build a Vanguard deck, start by selecting a Vanguard unit that aligns with your strategy and playstyle. Choose a balanced mix of grade 0, 1, 2, and 3 cards that support your Vanguard's abilities and synergies, ensuring you have a solid core of key cards, triggers, and support units. Pay attention to the card ratiOS, typically including a higher number of grade 1 and 2 cards for consistency. Finally, test your deck through practice games, adjusting card choices based on performance and synergy.