I found Res in verona and Phantom on Rusty. No Target yet :(

I found the spell only on Tekron. However, my spell book is chock full of other (mostly useless) scrolls that I cannot buy it, and I ditched the cyclops meat tank some time ago anyway, so it wouldn't be too useful for me anyway.

Dig away! Your dragon has an amazing nose for spells.

Apart from the great money and runes, I have found several mid level spells this way (Multiple copies of target and slow btw) So use treasure hunter at least twice a combat :)