Dragonbone Golem is an encounter inside the Onyxia's Lair set of Mercenary Bounties.
This bounty can be picked up from the Bounty Board and recommends a Party level of 30 to complete it.
You can unlock Dragonbone Golem by first completing Smolderwing.
Completing this Bounty will unlock the SI:7 Smuggler Bounty.
After a character dies, restore @ Health to this Merc.
Potential Dragonbone Golem Bounty Rewards
In addition to earning Mercenary Coins based on your Party members, Bounties are assigned to specific Mercenaries to allow you to target loot better.
The following Mercenaries can have their loot appear in the Dragonbone Golem Bounty: