User blog comment:Crashfan1997/Polar, The Icy Boy/@comment-7481207-20130707132619

His Q deals very little damage, even with the icy effect it's damage is quite low.

His W seems to be a really good escape as it has high range and leaves behind a decent slowing field, and it has an ok icy effect. But, as with his Q, it has very low damage.

The golem from his E seems to be just a meat shield, as again, it deals way too low damage to be a threat.

And finally his ulti: It can be good against auto-attack carries like Kayle, Teemo and Vayne, allowing you to focus on the rest of their team while the carry is useless. But against any champion that deal ability based damage, it gives them 5 seconds immortality while they can damage you freely as long as you're within range. Assuming ally casting it has the same duration, casting it on an allied mage after it flashes into the enemy team would be very powerful, but it doesn't protect against CC so it isn't way too OP. Still a bit much, and extremely good escape against melee fighters without range.

For the damage part, I recommend you to look at LoL's champions for reference.