As I am studying up on this dragon for the next fight, one thing I just noticed.
Searing Heat. Because it lasts until the end of the dragon's next turn, there is a HUGe swing in its effectiveness. If the dragon has Initiative 21, the effect last an entire round. If the dragon has Init 19....it does absolutely nothing.
That mechanic doeesn't work well on the "action on init 20" type stuff. Fine for a legendary action.
Searing Heat. Because it lasts until the end of the dragon's next turn, there is a HUGe swing in its effectiveness. If the dragon has Initiative 21, the effect last an entire round. If the dragon has Init 19....it does absolutely nothing.
That mechanic doeesn't work well on the "action on init 20" type stuff. Fine for a legendary action.

