I must have been struck by my magical muse recently, another spell for your perusal.
The Earths Sucking Grave
Range: Touch, Duration: diameter, Target: part
The magus touches the ground at his feet and the earth he stands on and that within 9 paces of himself turns into quicksand. This quicksand is 9 paces deep. Nearby enemies tend to find this an extreme inconvenience and unless they manage to get out of the quick sand within a minute they will sink under the ground level and start to suffocated. It takes a dexterity stress roll of 6+ to escape the first round and the difficulty goes up by one for every round that the target remains in the quicksand (He is gradually sinking deeper and deeper). The caster remians unaffected and can walk across the surface of the quicksand as if it were normal packed earth. Note that this spell only works while on earth, stone or other material will cause it to fail.
(Base 2, +1 touch, +1 diameter, +1 part, +1 size, +2 complex - caster unaffected)
The only thing that bothers me about this one is the caster unaffected part. I made this spell for another player in my saga and thats what he requested. Does this make rules sense? Is it even possible to do like this?