⛺Camp
The camp can restore health for heroes in a team.
If the main city is far away from the target place, you can build a camp during the march and dispatch the team through the camp

Tips: Level 5 is the highest level of the camp.
If you want to dispatch more teams, you can upgrade your camp!
🛡️City Wall
The wall can block the enemy team's advance. When your team stands on the land with the wall, the wall will increase the team's defense.
After upgrading the city wall, you can increase the durability of the city wall and increase the defense bonus of the team. Therefore, building the city wall is necessary for every lord!

🗼Crystal Tower
Crystal tower can automatically attack enemies that enter the territory within 1 square of the tower, causing spell damage to them.
When your team stands on the land with the crystal tower, the spell attack attribute will be improved. Upgrading the crystal tower can increase the spell damage and the spell attack bonus of the team.