Except as noted above, and as detailed hereafter, this spell is the same as the third level magic-user phantasmal force spell (q:v). The spell caster can maintain the illusion with minimal concentration, i.e. he or she can move at half normal speed (but not cast other spells). Some minor sounds are included in the effects of the spell, but not understandable speech. Also, by concentration on the form of the phantasm, the improved phantasmal force will continue for 2 rounds after the illusionist ceases to concentrate upon the spell.