Just getting in to SotSB. For those of you who have played this game, which of the 6th-level Mage spells do you find most useful?

Death Spell is very effective against monsters with scary special attacks and low HP, like Cockatrices.

The others are basically useless. Disintegrate and Flesh to Stone allows saving throws, and that means a lowly Stinking Cloud which is insta cast and can affect up to four creatues is a much better option.