SPELL-CONJURE-ELEMENTAL

conjure air elemental: "ae" "xu" "jur" "ain"
conjure earth elemental: "mo" "xu" "jur" "ain"
conjure fire elemental: "fu" "xu" "jur" "ain"
conjure water elemental: "too" "xu" "jur" "ain"

Conjuring elementals involves sacrificing an object:

red stone for fire elementals
pale blue stone for water elementals
grey stone for earth elementals
clear stone for air elementals