I had Mined approaches slated for this slot, but questioned if a 'one and done' fortification was more appropriate to common. Noone responded, so I'm going to use that as a green light.

I think it is, but this ability is still rather restrictive given that you have to sacrifice a land. You lose a lot of card advantage. What if it was "Destroy target attacking creature"?

Here's another idea: "Destroy an attacking creature at random." That way it encourages attacking en masse, because your good creature is protected by numbers. The way it is now, it discourages attacking, which is frowned upon at common.

To nitpick, the land isn't attached to the fortification, the fortification is attached to the land... right?
Anyway, I like Mined approaches better, I think. The damage just feels better than straight destruction.

Edit: Yes. Thank you.

I'm more than happy to throw Mined approaches in the file. I'm just concerned that, in order for it to fit in the common file, it has to nuzzle up to 'unplayable'. It would certainly be a royal pain if matches came down to "Who is willing to sacrifice the most land". That, and I don't see any reason why we can't put it in uncommon.

But, again, I'm cool with either card. Out of curiousity, Link, do you dislike the 'one and done' nature of this card, or the fact that it destroys as opposed to deals damage? This could easily be 5-7 damage to an attacking creature and fill the same mind-space... but I don't think that's solving your problem with it.