Go to the Steam library and right click on Sorcerer King: Rivals. Select Properties - General - Launch Options.
You will see "These options are for advanced users only." Enter "-cheat" (without quotes). After that, you can use these commands:
CTL + U - Open the whole map
CTL + T-Teleport the unit to the location where the cursor is
CTL + M - Get 100 Mana
CTL + E - Open all spells
CTL + C - Copy any unit