Install the mod to your AoW directory. To switch between rulesets use Lord of Maps' Rulechanger. If you don't have Warlock's Rules this will require creating a folder called Ts136 in the folder Release and copying all the files from Release to the new folder.
2 WHY SHOULD YOU DOWNLOAD IT ANYWAY?
The mod uses counterunits. Archers (in large groups) are good for killing infantry, infantry is good for killing cavalry, and cavalry is good for killing archers. There's more, but this should do for the beginning.
The mod also uses a hero class system. A hero or leader can now belong to any of the 3 classes available to every race (hero, wizard, special). In addition there are also a few non-race hero classes (dragons).
If you play the camapaign and chose a custom made character and change the race your leader will be a wizard.
Also combat magic is now cheaper. Generaly 50% cheaper, but there are exceptions.
3 HOW TO CONTACT LORD DRAGATUS (THE GUY WHO MADE THE MOD)
I'd prefer you contact me at the AoW Heaven Forum (aow.heavengames.com). However, you can also reach me by sending an e-mail to firstname.lastname@example.org.
4 WHAT'S NEW
Fixed some other bugs like the Frostling Shamans 28 movement. Ground based level 3 cavalry now gets Dragon Slaying at gold. Karaghs also get physical immunity. Now also all units should be using the right GFX.
Unit enchantments no longer "drain" skill points from heroes. (This explains those misterious negative skill points when your hero made a level.)
Edited Reaper Hero gfx.
This is an outdated version of the mod. The only reason it's still up is because I overlooked the part of the instructions that said that I should send updated versions to Angel Draco (though I supposed that would now be Nojd).
My point: don't download it, download the newer version (which however, right now still needs to be patched)instead.