Blood Artist and Bastion of Remembrance both bypass Exile.
Even though cards are being exiled instead of dying, both Blood Artist and Bastion of Remembrance still deal damage. This has been a bug since they first came out and it still hasn't been addressed.
Leyline of the void card effect: If Leyline of the Void is in your opening hand, you may begin the game with it on the battlefield.
If a card would be put into an opponent's graveyard from anywhere, exile it instead.
Blood Artist card effect: Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.
Bastion of Remembrance card effect: When Bastion of Remembrance enters the battlefield, create a 1/1 white Human Soldier creature token. Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.
-
[Deleted User] commented
If a token dies it will not be exiled; Leyline only exiles cards