Ahab

Needs Tours & Tournaments, and it's mostly an RNG stakeout. Employ a Master of the Hunt with the Hunter trait and high Prowess, set their task to Track Legendary Game, and keep hosting hunts until a legendary sighting appears - then run the Legendary Hunt and succeed. At T&T launch this was properly wonky (sightings not spawning outside falconry, hunts refusing to launch), which is where its fearsome rarity comes from; it has been attainable since, but expect the sighting to take its sweet time. Hunting Accident and Lions and Tigers and Bears, Oh My! keep the waiting productive.