“The brokers deal in objects most exotic and profound. If Kel'Thuzad requires reagents from them, his ritual must be outside the normal scope of the House of Rituals.
This mysterious reagent could be the key to unlocking Kel'Thuzad's plan. We must get a hold of this delivery from Oribos.
I have taken the liberty of concocting an alchemical bomb. Use it to ambush the caravan and retrieve whatever they are transporting.”