Dark Troops Black Knight, Jester
Black knight could have freakishly high attack/ defense, maybe ride an armored horse which has its own health bar. Health 1500 attack 120dps cost 275 de; Dark elixir horse health 3500.
Jester could be like the barb king or archer queen. Just another dark elixir freak. Walking around throwing explosives or drooping explosive jack in the boxes. Or drop giant jack in the box that releases minions or something crazy like evil clowns. Jester health 3000, DPS 650, Dark elixer cost 30,000