Yeah, it just depends on the occasion. The target must be a 2-hex unit - usually it's a strong foe. Unless you're attacking them with your other units, nothing to worry about magogs. There's always to choice to buy gogs too.BoardGuest808888 wrote: Tar, that might not necessarily so. As was pointed by cjlee.
It's true that magogs can hit their own allies, but by taking advantage of larger units (which occupies more than 1 hex), that can be avoided.
But the strategies are many, as you and cjlee said.
Now regarding this castle x inferno, in spite of spells or anything else, if you place 1 of each unit of one faction against 1 of each unit of the other, upgraded or not, who would win? I cannot test myself, but I think that's what have been asked in first place.