"Dialga, why u not know Future sight?"

It is literally more time based than roar of time, which is just a dragon hyper beam. Although in my headcannon Dialga uses the energy of it's future self to attack with such power, that's why it's stunned next turn.Or roar of time should be like future sight. Maybe use it turn one and it deals damage at the end of each turn for three turns, with a power of 50 each, dragon type move. via /r/pokemon https://ift.tt/3lhuKhn