Mission: Possible But Not Probable

You will need to steal the tower key from Foreman Silixiz, <name>. Once you've got the key in your possession, hold on to it - I may need it later. Remember, the poison has weakened everything in this tower. Use your abilities to bring chaos and destruction to its inhabitants. Slay them all -- show no mercy! Once everything inside lays in a bloodied heap, pick Gallywix's lockbox and steal the cache of Zanzil's mixture held inside. Take both the head of Gallywix and the mixture to Shenthul in Orgrimmar.