It basically gives that hero the equivalent of a one-hero dragon bonus - full mana ready to be used. It's insanely strong one those lvl 5 heroes with AOE (like queen of pain, my personal favourite with it)

引用自 theFlyingCamel：

It basically gives that hero the equivalent of a one-hero dragon bonus - full mana ready to be used. It's insanely strong one those lvl 5 heroes with AOE (like queen of pain, my personal favourite with it)

Wow, did not expect that.

Thank you :)

"turns your active ability to battlecry"
what does that even mean, in english?

Oh well thanks for the explanation.