Healing cards are an absolute necessity for a Flying Castle deck. Cards such as Saki's Cookie, Pudding or Quick Restoration will heal the large amounts of damage dealt by opponents. HP is the unit's most important stat, so the player should keep it as high as possible at all times.
Players should try to stay behind other players when possible. Engaging in battle may be necessary in certain situations, in which case Flying Castle features a decent ATK stat and may have a chance to KO the opponent.
Players should try to focus on keeping as much pressure as possible on Flying Castle at all times. Using cards like Cloud of Seagulls or Sealed Guardian and constantly attacking will quickly deplete its HP, leaving it vulnerable to most attacks.
It should be remembered that Battle cards can not be used against Flying Castle, which means the player will have to rely on their ATK stat and rolls. Suguri's Accelerator and Super All-Out Mode can be very useful against it as they are event cards that adjust stats outside of battle.