Magic Carpet 2

Press I and then type QUICK followed by [Enter].
You can now use these keys:

[Alt]+[F1] : Access all spells
[Alt]+[F2] : More mana
[Alt]+[F3] : Destroy all players
[Alt]+[F4] : Destroy all castles
[Alt]+[F5] : Destroy all balloons
[Alt]+[F6] : Heal
[Alt]+[F7] : Kill all creatures
[Alt]+[F8] : More Spell Experience Points
[Alt]+[F9] : Free Spell Usage ON/OFF
[Alt]+[F10] : Invincibility ON/OFF
[Shift]+[D] : Complete current objective
[Shift]+[C] : Complete level

Thanx to: Theodor Radu (Information from Cheat Machine)