The older boy seemed somewhat impressed by the eagerness shown, the competitiveness clear already.
"If there are no questions, then yo will be taken out to find your treasure. There are no rules and no time limit, but you will not be able to return without your treasure."
He said this very serously, before guesturing to the other boys who were not new recruits. They blind folded each of the new recruits and they were hoisted into the air, carried out without ceremony.
The air was warm and it was still day as the boys emereged, carrying their perspective kin into the forest, where they put them down and removed their blindfolds. 
"You must go to complete your task now," said the first boy. "You will recieve no assistance and will only be collected upon finding your treasure."
He guestured to the woods. 
"You must seek your prize and then call out that you have. You will be watched and no one will come to you unless they know you have the agreed prize."
He clapped.
"Go, boys," he said, and allowed them to depart.
Some of the new boys ran off singularily, others in pairs and groups. Some seemed keen, others confused.
The boy who had taken them simply smiled. These boys didn't yet know that the "flight" they had taken on their arrival had put pixie dust in their system. So long as they had more within 5 days, they would notice nothing, but those who did not would suffer extremely. If they were not done with their task by then, they may not be able to complete the task and would fall prey.