This achievement requires you to fish from the fountain in the Legion version of Dalaran, and fish up all the different coins.
If taken at least partially seriously, the items suggest that the fountain, which is stated to be magical, is somehow connected to any well or body of water that is used like a wishing well. This would be the only explanation for items from enemies like Torok Bloodtotem, Advisor Vandros, Helya, and God-King Skovald. The same could be said on items from Golk the Rumble, which states that Golk is trapped in his cave when he made his wish, and most oddly of all Vydhar, who is literally an immovable tree.
- Patch 7.0.3 (2016-07-19): Added.