Jarvan IV is the newest champion that came out.
Jarvan is a melee tank/dps that has great survival abilities, and deals tons of damage with single attacks.
Jarvan's abilities are
Q Dragon Strike. This deals damage to enemies in front of Jarvan and also lowering armor
W Golden Aegis. This one is a shield, that also slowes enemies down when used.
E Demacian Standard. Places a flag on ground that increases attackspeed and armor for nearby allies.
Q Cataclysm. Javan leaps to enemy and creates a blockable terrain that wont let anyone go through. This is great for chasing enemies!
Jarvan is a great champion when mixed with a ranged summoner. I really enjoyn playing with it. Go and try it out! Peace