Dark thunder troop

How about a flying thunder dragon that shoots muiltple lightning strikes like the lightning spell. Its speed should be the same as the normal dragon and speed should increase once it is upgraded. Also when the thunder dragon shoots lightning its strikes shouldnt be the same as the lightning spell or else that would make it OP, it should do somewhere between 20-50 damage. The thunder dragon should be somewhat immune to the hidden tassels since lightning deals with electricity. The thunder dragons favorite target is any. TH10 required. It should cost somewhere between 375-500 dark elixir to make. Housing space should be 25. Any comments that could improve the thunder dragon?