The time-traveling Kang the Conqueror is an iconic Marvel villain with a penchant for collecting trophies from his temporal adventures, but that makes him surprisingly vulnerable to the Black Knight's unusual form of time travel. Kang takes pride in beating powerful enemies and claiming something from them as a prize, from the sword of Conan to Thanos' Infinity Gauntlet. This obsession backfires with the Ebony Blade, the famed sword used by Dane Whitman, otherwise known as the Black Knight.
The Ebony Blade was created by Merlin as a dark counterpart to Excalibur, and given to Sir Percy, Dane's ancestor and the original Black Knight. The sword has its own slew of dark and mystical powers that can corrupt its wielder and draw out their bloodthirsty side, feeding on their corruption in exchange for increased power. However, the sword also has a time travel element that connects Black Knight and Kang.
Related: Kang's True Endgame Proves He (Not Thanos) is The Avengers' Real Nemesis
In Avengers #71, by Roy Thomas, Sal Buscema, and Sam Grainger, a battle between Kang and the Grandmaster transports the Avengers to the year 4000 AD while Goliath is holding Dane's Ebony Blade. In the present, Dane focuses on his connection to the sword and — with the help of Sir Percy - travels to the distant future using the Blade as his anchor. There, he defeats Kang and his forces and rescues the Avengers. While Dane is ordinarily able to have the sword physically return to him like Thor's hammer Mjolnir, it turns out he's also able to transport himself to the sword, even over the gulf of time. This is a useful enough ability against Kang, but is even more relevant given the Conqueror's constant trophy hunting.
Kang the Conqueror has sought
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