From Dragon Quest Wiki
Quest #106 - "Taking Soul Control"
Location Gleeba, on the roof of the palace
Availability Upon arrival in Gleeba
Requested by Brunhild
Fulfilled to Brunhild
Item Required Take 10 hits meant for party members using the Warrior skill Whipping Boy.
Reward Paladin class becomes available
Detail Brunhild at the Mirage Mahal wants to see if you've got what it takes to be a paladin. You need to use the Whipping Boy ability to protect your companions ten times in battle in the Djust Desert.
Hint for solution Find monsters that hit several times or a group of monsters. You have to be fighting in the Djust Desert for the hits to count.
Repeatable {{{repeat}}}