Quote Originally Posted by Mo' Meninges View Post
There's an Ice Beam HM?

And sure. I made sure my Extremespeed Dratini was Jolly instead of Adamant, so that balances Atk and Sp. Atk a bit, with a speed boost that Dragonite could really find useful in competitive play (although Thunder Wave works wonders for speed reduction as well).
If you're using a Dragonite build centered around a priority move, why did you give it Jolly? Extremespeed will negate the speed boost by hitting first all the time. Adamant would have just given it extra power.