i do nto own her but i have seen her only once since the initial 'zong new champion must play' wave, and she did horrably bad, i agree with these changes but i think northern winds should simply do extra damage to minions, not raising its base damage (look at fiddles dark crow) because then they have room to improve it beyond what you suggeted without breakign in Vs players
There are a few things that i actually believe that should be changed about Sejuani:
1 - Frost (Innate): this is a pretty cool Innate, but it's also quite weak that it isn't really impactful. I believe there should be some stacking mechanic where you'd stack the slow. Your area threat would be the same, but your focused threat would be a bit more awesome. It would also help her jungling, as it's a must that you level Northern winds for clear speed, but your gank power is wrapped around Artic Assault and Permafrost, making your early game quite slow when combined with Sejuani natural low initial clearing speed. (her clear speed once she levels a bit and buy some health is fine through)
2 - Artic Assault - the thing about this spell was the range. Sejuani had the longest dash ever when she first came out. Now it's like nothing compared to her former glory but no other aspect of the spell was changed to compensate to the range loss that is indeed much more impactful that, let's say, gaining bonus Armor/Magic Resist when she hits an enemy champion.
3 - Early jungle - Sejuani 1st-to-3rd level jungling is by far the worse i've ever played and can even be extended to bad until 4th level if she tries to pick W-Q-E for a gank and fail to secure the kill. It's bad on both clear speed AND sustain.
How to solve it:
Frost: 10% + stacking +7.5% (stack twice) or +5% (stack thrice) slow to movement. She will still be limited to 10% on AoE slow, but now she can gank at level 2 and doesn't need a frozen mallet to really lock down on targets. Enemies can still take quick measures to avoid her from stacking the slow, meaning it's way more counterable than frozen mallet.
Arctic Assault: bonus armor/mr for a very limited period. Either by the start (to reduce the potential damage during travel and a bit more after) or when hit enemy champions (to further reward the agressive play so thematically fitting her kit and lore)
Early game stats: even if level18 stats remains the same, Sejuani could benefit from a better initial armor and/or health regeneration for a slightly better lvl-1-to-3 jungle that doesn't make you feel like you're trying your luck with a non-jungler on jungle. I've played Galio jungle and he has a pretty damn more safe jungle making the monsters heal him more than they do damage him while under bulwark (all the while upping the damage output of his spells - and give up blue is nothing when you just want to 1st item a 890g chalice to solve all your problems).
© 2013 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.