Listed below are the three upgrades available in the game and their effect. These upgrades are not permanent and need to be reapplied regularly.

Spell Upgrade:
Gives a 40% increase to your spell damage.

Hero Upgrade:
Makes your hero 60% stronger and more resilient.

Troop Upgrade:
Gives you a 30% boost to your morale bar, allowing you to call in reinforcements more rapidly.