I don't agree. Sorry, much is wrong with this, i don't think cass is god tier, brand is a better burst caster in 3s, kennen really isn't that great, pantheon is terrible, the list goes on
Kennen - CC and damage is very, very strong. Just pretty much need a WoTa and Sorc Boots to produce major damage.
Pantheon - Early/Mid games are very, very strong. Can easily chunk out any tops, unless they go full defense masteries and armor runes.
Also Pantheon ultimate is a game changer. Just throwing that out there