1st impressions on Tahm Kench
TK is probably the best balanced champion design Riot has released since Vel'Koz. It looks like he will only need slight buffing or nerfing on his abilities and his kit and personality is well thought out.
Great passive. It allows you to power up two of his abilities but gives the opponent counterplay to try and get away first.
His Q is a nice poke with a slow and possible stun. Does an appropriate amount of damage.
His W has amazing utility offensively or defensively. It does great damage to enemies (which is fair since he has to stack his passive first) and takes them out of the fight for a few seconds. You can grab minions for more ranged harass. Defensively, you can save an ally who is about to die.
His E gives him the ability to win in trades through healing after the trade or mitigate burst.
The only bad part of his kit (IMHO) is his ult. The range is HORRIBLY low. You can about go from a tier 1 tower to a tier 2 tower. It also seems like it's slower than the Rek'Sai ult. It is almost worthless until you get rank 2 or higher. If definitely needs buffed.
He is definitely fun and will see play at all levels.