It is sad that we are not getting free Ayra, but we still have Arden. I think Arden could be interesting with some help. Hawkeye just break my pity rate on the Performing Art banner.... 

While I am thinking of who to give his Death Blow to, this reminds me of Arden.

Just checked it in the duel simulator, with Death Blow and Ignis together with his default kits, against base set enemies with Fury 3.

If he initiate attack first, the match up is Wins: 166, Losses: 1, Inconclusive: 1  !

Furthermore, even if enemy initiate attack first, and he initiate next, he get Wins: 129, Losses: 31, Inconclusive: 8!

This seems pretty amazing. Of course, he would better be paired up with teammates having Guidance, Armor March and/or Reposition for his best potential.