The Darkin Are the Horseman of the Apocalypse and Other Darkin Observation
With our new Darkin friend and confirmation of Varus' Darkin roots I think we are establishing a clearer picture of what Darkin are.
Darkin are sentient eternal weapons who create parasitic relationships with those who wield them, one is the Blade Aatrox, the other is the Scythe Rhaast, and the last known one is the Bow that Varus uses. These three weapons are all weapons used by the horsemen of the apocalypse:
War - The horseman with a blade and a well of blood, riding the red horse, War =
Aatrox (Duh)
Death- The horseman with a scythe and harvester of souls, riding the ashen horse, Death = Rhaast (as Rhaast even states when talking to Aatrox, Death and War together)
Conquest - The horseman with the Bow and Arrow and the crown, riding the white horse, Conquest =
Varus' Bow (Varus is corrupted during a moment of Noxian conquest of Ionia)
So now we are still missing Famine, who carries a Scale, and rides the black horse, Famine would likely be a mage of some sort with a powerful magical scale We may also have Pestilence though pestilence is usually a replacement for conquest in more modern depictions pestilence could still be a Darkin, it would be interesting to see it as a Darkin without a host as Pestilence has no weapon (occasionally seen with posion arrows but thats Varus) It could be a small glass orb with a swarm of pestilence surrounding it, it could be a support who can possess their ADC's body and cast spells directly from their host.
NOW JAX
, people mention Jax seems to have some sort of Darkin connection, my thoughts on that is that perhaps Jax was a corrupted Darkin host but his sword (Real weapon) was separated from him and found a new host. Perhaps thats how aatrox empowers people like tryndamere, by letting the person wield him for a short while corrupting them slightly.