Cards come in varying varities from common to legendary, you build up your deck by combining Titans, Pilots, and Burn Cards and then join the Frontier War and use your best strategies to try and dominate the enemy team.
Cards are leveled up by collecting enough duplicates and paying the game’s common currency, credits. Each card type has a different effect on the battlefield, Pilot Cards can control key locations on a map and move fluidly, Titans Cards can hold lanes and take on turrets, and Burn Cards add extra battlefield support at times of need.
The video below will explain in detail everything you need to know about support cards along wth some placement tips.