There is no reason to remove control of our Hero from us during the dragon animation. This is the ONLY instance that removes control from our hero and should NOT exist!
I lose anywhere from 2-6 seconds every time a dragon spawns where my hero just stands still and any (touch and go) spells I have cast lose 90% of their effectiveness.
IF you cannot grant us control of our hero while keeping the dragon animation, then JUST REMOVE THE ANIMATION!!