There was similar power in the ESO called Bolt Escape (Streak),
It damages/stuns enemies when you streak, with each teleport, end usage gets higher and higher but also stunning enemies when you arrive your intended destination. With CCs so useless in that game, it never becomes problem however.
Maybe similar could be done this way.
So when you teleport, you could leave location aoe ability from behind you, and after arriving your destination that can lasts X seconds. It could be small radius. After using 3 times it could go on long recharge.