DISCLAIMER: Your Steps and Tasks may be different
1) Speak with Guard Belal in the Underground Forest encampment.
2) Travel to the Otherworld and kill outcast thalooniagh seers until one drops a journal. There are two camps that have seers in them near the entrance of the Otherworld from the Underground Forest. The first one is at 22, 13 and the second at 20.5, 16.5.
3) Return to Guard Belal in the Underground Forest with the journal.
Level 48 Paladin Received 1,350,000,000 Experience and 1 gold.
Level 50 received 1,600,000,000 experience and 1 gold.
Champion level experienced gained: 800