New dark spell

I was thinking that they should add a new spell called the betrayal spell witch would cause cc troops and heros to betray their village so the new spell would have 5 lvls
Lvl 1: can control anything below the or the same as 10 storage capacity (ex: 2 wizards and 2 archers or 2 giants) and can control heroes for up to 10 seconds Cost to brew would be 200 de and to upgrade 30,000 de
Lvl 2: can control anything below or same as 15 storage capacity and heros for 15 seconds deto brew it would be 250 de and to upgrade would be 35,000 de

Lvl 3: can control anything that takes up 20 space and can control heros for 20 seconds brew cost would be 375 and upgrade cost would be 40,000

Lvl 4:can control anything that takes up to 25 space and can control heros for 25 seconds the brewing cost would be 450

Due to the fact that golems and lava hounds have so much health and can accualy make a huge difference I think lvl 4 is the highest this spell should go if c.o.c decided to add this spell

This could be used a lot. It would make defeating a village MUCH more easier with making the king betray. I'm not so sure it should be added tho.