In casting this spell, the caster could choose to summon up to four minor elementals. The spell's power would be divided among the summoned elementals so the more elementals there were, the less powerful they would be. The elementals were friendly to the caster and their allies and would follow orders and last for a hour.
However, if the caster lost concentration, then the elementals would break free and become hostile toward the caster and their allies. If the spell was cast at specific higher spell levels, then the number of summons could double or even triple but not decrease in strength with numbers.
Only vocal and somatic components were needed for the casting.