Heroes 6 - Discussion

1) To destroy, say, 4 cannons, you need to deal 100 more damage with magic.
2) Against neutrals, 25 HP is quite significant. + it somewhat increases the effectiveness of regeneration.

1) In the current mechanics, dealing damage with magic is not profitable, except perhaps for finishing off almost dead units.
2) Against neutrals, it doesn't matter how much health they have: the medusa's regeneration will restore it all.

Not everything is decided by Fireball.

Fireball?
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Regarding crossbowmen: I remember the mages from the fifth game, the situation was a little better there, because they at least had magic in case they needed to be locked down. + the alt-upgrade has some kind of more cunning shot; they hit allies much less often, so they can be safely locked down.