Pyroak's typing isn't perfect, but it's bulky and it's hard to break its subs if you can't hit it hard enough. Howl lets it set up on some of the Pokemon it counters and it hits hard on things that aren't bulky enough or who don't resist. Skarmory and Hippowdon are 2HKOd after a Howl, in addition to OHKOing 252 HP Tar, OHKOING 212 HP/252 Defense Vaporeon with SR, OHKOing most variants of Bronzong and Metagross, and other feats.
OHKOing Tar is nice because if you Howl on the switch, you outspeed and beat most CBTars if you run only 92 Speed EVs. This is without wasting HP for a sub.
Last edited by Beej; Dec 29th, 2008 at 8:08:40 PM.