During the night you can choose following stackable upgrades:
Upgrade King Attack (max x10)
Increases the King's attack damage by 10%.
Upgrade King Regen (max x10)
Increases the King's health regen by 0.005% missing health + 0.005% max health
Upgrade King Spell (max x10)
Increases King's AOE spell damage by 10%
Each king starts with one of the following spells:
Releases an orb of frost that jumps to nearby enemies, dealing Pure damage and slowing attack speed by 15%. Deals 2% more damage each bounce.
Slams his staff on the ground, dealing Pure damage to all nearby enemies
Uses mana to unleash bouncing lightning bolts that deal Pure damage.
Deals damage per second to all nearby enemies