Here some ideas i had for dark elixer troops. The witch is unlocked before the reaper.
Reaper lvl1 Damage:100 Health:300 Housing-space:10 Ability:does0.2 tile splash radius Favorite-target:defenses Cost:120dark-elixir
Lvl2 Damage:130 Health:370 Research-cost:80,000dark-elixer Cost:160dark-elixer
Lvl3 Damage:190 Health:460 Research-cost:120,000dark-elixer Cost:200dark-elixir
Lvl4 Damage:240 Health:550 Research-cost:160,000dark-elixer Cost:240dark-elixir
Lvl5 Damage:300 Health:700 Research-cost:200,000dark-elixir Cost:280dark-elixir
Witch lvl1
Damage:60
Health:90
Housing-space:7
Ability: can shoot over walls
Favorite-target:any
Cost:60dark-elixer
Witch lvl2 Damage:110 Health:250 Reasearch-cost:100,000dark-elixer Cost:100dark-elixer
Witch lvl3 Damage:200 Health:400 Research-cost:150,000dark-elixir Cost:140dark-elixer