Braum's Q does too much as an individual spell especially in the context of the his other utility
Winter's Bite
Cooldown: 10 / 9 / 8 / 7 / 6 Cost: 55 / 60 / 65 / 70 / 75
Braum propels ice from his shield that travels forward in a line, dealing 70 / 115 / 160 / 205 / 250 (+2.5% of Braum's max. health) magic damage and slowing the first enemy hit by 70% that decays over 2 seconds.
It's a fairly short cooldown with low mana cost that scales fairly well off braum's hp. The slow is also pretty huge and it applies 1 stack of his passive. The ability just does way too much especially when you consider all the other utility baked into his kit. Toning down the damage and the slow a tad might actually make Braum pretty balanced instead of a consistent top support pick.