Cause of two things:
Shadow Assassin reminds me of Darksiders II Death.
Rhaast reminds me of Khaine from Warhammer. (an eldar god of death and bloodshed)
Ah and fun fact: You pronounce Kayn and Khaine the same.
Gosh, such a cool hero. 
XIII Vanitas3 votes"Kayn" and "Khaine" are pronounced the same, but spelled differently.
VelvetCrotch1 votes[{quoted}](name=RUCK FICKY,realm=EUW,application-id=6kFXY1kR,discussion-id=s9UaK3qp,comment-id=0001,timestamp=2017-07-16T14:06:44.163+0000)
"Kayn" and "Khaine" are pronounced the same, but spelled differently.
fixed. thank u!
Fasmodey1 votesKhaine is not God of Death tho.
He is God of War and Murder.
VelvetCrotch1 votes"Violence, blood, cruelty and murder". Yeah, but fits him none the less.
And the dark elves honor him. And - to be honest - Kayn looks quite a bit like a dark elf.