[@Ciaran] Yeah, no shockwaving an entire building down at once. Crack the basement and hope for the best if that's what you are aiming for. And not on living matter, hardly solid enough to really carry the shockwave through itself. Tectomancy works better on things that muffle the reverb less.

As for the air defence against flying shards, sure. But they better not do the hunker down trick with earth.