...You can also take cows and get free resurrection on TE...
...using wings and a chain of Necromancers!
It's a pity that Heroes doesn't have a demo mode, like... for example, in Quake, when you download a demo to your computer and study tactics and various tricks.
Galtran is quite possible and can be a main hero for players on TE, since you can't take only skeletons from the transformer to the arena, but you can take those obtained through necromancy, as well as liches or zombies.