The Legacy of the First Blade: Episode 3 Add-on for Assassin's Creed Odyssey has 5 trophies - 4 bronze and 1 gold.
Acquire the Sword of Kings
Kill all the Ancients in the Order of Dominion in Messenia
Secure your bloodline
Kill 10 enemies using the Fury of the Bloodline Ability.
Heal by getting 10 headshot kills while you have the Golden Harbinger equipped.