The listing, Etherlords I & II - Steam Key has ended.
Etherlords is a 3D turn-based strategy game where four races of wizards battle for supremacy. In the time of change, magic of Ether gives you power to prevail. The game brings players a novel game play that merges magic combat from trading card games. There's about 300 spells, which allows you to create a multitude of individual battle strategies.
Here is a steam copy for the game "Etherlords I" and "Etherlords II" :
http://store.steampowered.com/app/270770/
http://store.steampowered.com/app/270790/
All you need to do after receiving the key is :
1- Open your steam and sign-in.
2- Go to the games menu in the top of the screen you will find "Activate a steam product".
3- Follow the instructions then enter the key to activate the game.
4- Install the game.
5- Enjoy it.
Please note that if you use the key and activate the game through steam, you can't ask for a refund.