Black Legion - Legion Fleet: The XVIth Legion's Great Crusade fleet was accorded to be among the greatest under any single commander's flag, with in excess of one hundred capital ships and perhaps three times that figure in smaller cruisers and escorts under Horus' direct command. Abaddon's grand fleet after the Heresy has comprised many thousands of cursed and Chaos-mutated vessels.Amongst them are gigantic space hulks, grand Battle Barges, rebel strike fleets, weaponised asteroid chains, Repulsive-class Grand Cruisers, Desolator-class Battleships, Despoiler-class Battleships named in his honour, Hades, Styx and Lethe-class Heavy Cruisers and a thousand other warships besides.One of his most powerful warships, the Planet Killer, boasts a weapon of such extreme power it can depopulate a world in a single night.Yet the true jewels in the crown of this insane armada were the two Blackstone Fortresses, ancient and alien starbases so large they once anchored entire sub-sectors of the galaxy. Each possessed power beyond mortal imagination, being both an immovable object and irresistible force combined.Yet when Abaddon combined the might of three Blackstone Fortresses at Tarantis, during the climactic events of the Gothic War, the resultant bow wave of raw Warp energy inflamed the system's star to such an extent it consumed the two worlds in closest orbit before going supernova. The cataclysm wiped out everything for many trillions of miles in every direction in a storm of gas and plasma.With the power to destroy entire star systems at his fingertips, Abaddon inadvertently forced the Imperium and the Aeldari to ally against him, and he was driven into retreat at the Battle of Schindlegeist. It was whispered that two of the Blackstone Fortresses existed at the heart of the Despoiler's fleet after the end of the Gothic War, and that Abaddon has other such weapons of annihilation waiting to be deployed when the time is right.During the 13th Black Crusade, Abaddon deployed one of these Blackstone Fortresses, the Will of Eternity, to Cadia. The fortress was damaged in battle with the Imperial Fists' star fortress Phalanx, but ultimately served its purpose when it was used as a giant projectile and slammed into the surface of that Imperial Fortress World to finally claim victory for Chaos.The second Blackstone Fortress was handed over to the service of the Red Corasirs warband of Heretic Astartes in the Maelstorm, who had become important allies of the Black Legion. It would serve an important role in trying to stop the resurrected Primarch Roboute Guilliman from reaching Terra during the Terran Crusade.The following starships are known to have been a part of the Black Legion's massive armada in the Eye of Terror, which has been known as the "Black Fleet" since Abaddon gained control over the Legion:Vengeful Spirit (Gloriana-class Battleship) - The Vengeful Spirit was the infamous flagship of the XVIth Legion and the Warmaster Horus during the Great Crusade and the Horus Heresy. It was upon this vessel that the final battle of the Heresy between the Emperor of Mankind and Horus played out and where the Warmaster's life and soul were finally extinguished by the unmatched psychic power of the Emperor. The Sons of Horus were able to recover their fallen Primarch's body before they fled the Sol System for the Eye of Terror and the Vengeful Spirit was taken by Horus' successor, Abaddon the Despoiler, as his own flagship. It still often serves in that function at present.Planet Killer (Unique Battleship) - The Planet Killer is a massive Chaos starship that served as flagship of Abaddon the Despoiler during the Gothic War and the 13th Black Crusade. The vessel owes its power to its main weapon, the Armageddon Gun, which can destroy an entire planet.Merciless Death (Despoiler-class Battleship) - One of the three original ships of her class that defected to Chaos, it plagued the Imperium for nigh on six millennia until it was destroyed in the course of the Pandorax Campaign in 959.M41 during the Fourth Battle of the Sunward Gap by a combined task force of Dark Angels, Grey Knights and the Imperial Navy.Harbinger of Doom (Battle Barge) - Formerly known as the Magna Tyrannis, this ancient Battle Barge has served the XVIth Legion since the start of the Great Crusade until the end of the 41st Millenium. It has on multiple occasions served as the flagship of Abaddon the Despoiler.Chariot of the Gods (Battleship, Unknown Class)Forinox (Avenger-class Grand Cruiser)Leonis (Avenger-class Grand Cruiser)Blade of Damnation (Repulsive-class Grand Cruiser)Castigator (Vengeance-class Grand Cruiser)Promise of Absolution (Unknown Class) - The Promise of Absolution carried a complement of almost 2000 Heretic Astartes, as well as several tens of thousands of mortals, Beastmen and other servants of the Dark Gods. It was lost with all hands during the 1st Black Crusade.Scarred Crown (Troop Transport) - This troop transport was destroyed with all hands by the fleet of Thagus Daravek the Death Guard Sorcerer Lord who opposed the Sons of Horus during the Legion Wars.Oath of Knives (Cruiser) - The Oath of Knives was a cruiser that was destroyed by the attack of the Death Guard Sorcerer Thagus Daravek during the Legion Wars.Skies of Wroth (Frigate) - Black Legion frigate that participated in the 1st Black Crusade.