While I was working on Arena Master, you also thought of "If more pieces have to die, maybe they shouldn't be always from same side." :)
As @GodOfTomatoes said, death condition resembles Bomber, although only when attacking. On being killed, no revenge is taken.
The unblockable attack on multiple targets 2 rows ahead, and low cost, make me want to enchant and push it from my 3rd row. Easy forks on enemy back line (champions).