[ And Strange's magic is more 'manipulate something else to help him out' not 'create something wholesale from the fundamental aspects of creation.' As such, he doesn't really know WHAT the theory behind magic goop would be in the first place. ]

In theory it can, [ Strange admits, with a little frown. ] But in practice, my magic isn't the sort of magic that could be useful for that. [ But who's WOULD... ] Perhaps Sans might help on the goo front? The Ringmaster said that his body, erm, dispenses ectoplasm, which is apparently a sort of a goo.