A few comments:

1. Tactions's Corner is not a fixed-map as we usually suppose. It is ARENA - map. It means, that there is no strategy on it but it only simulates a final battle between opponents. It is good when u don't have enough time to play a full game, and here you have nice models of final battles. I think i have nothing to add to Lider's description.

2. About Land of Magic. Certainly, i can observe some tactics it, but i hope, that it is more amazing to find it by yourself, the strategies are rather curious. Perhaps you can find something new there