New spell: Counter Spell!

If a troop inside the spell gets attacked, a percent of the damage dealt to the troop inside the spell will damage the cc troop or defense that attacked it.

Level 1:
Counter: 10%
Seconds: 7
Cost: 30,000 Elixir
Time to create: 45 min (stays the same for all levels)

Level 2:
Counter: 15%
Seconds: 9
Cost: 35,000 Elixir

Level 3:
Counter: 20%
Seconds: 10
Cost: 42,000 Elixir

Level 4:
Counter: 25%
Seconds: 12
Cost: 50,000 Elixir


Let me know what you think below! Tell me what you think I should change, too.