I would like to see a tank with auras that buffs allies (like 2nd power) and debuffs enemies (3rd). 2nd active could be a mass confusion effect which would make surrounding enemies (including minions) attack a random target for 0.5 (min 1 attack) to 2 seconds (depending on skill level), quite effective against AD champs. 3rd would be full passive aura or has an active which would drain the energy of surrounding champs (mana & energy) although it would be useless against champs like Vlad. 1st could be something like a cage which prevents movement but also protects the champion (could be used on an ally to save him while you finish off his attacker or prevent a powerful champ from attacking). Although, the emprisonned champ can still heal himself, drink potions, buff himself and stuff but he cannot affect anything else but himself. As an ultimade, he could phase out, disappearing from the game completly to other players, he could not attack anyone while in this state, but can ignore all walls (except the ones around the game board), minions and champions collision. While phased his regen (mana and health) would be greatly increased which would heal at least 25% of his max health and when the time runs out he gets a small offensive boost to represent the surprise attack with some armour and good mr bonus due to his phasing. If he phases out prematurely by the player, he wouldn't get as good buffs as he could get when the full duration is up. His passive could be either 1% chance per level to ignore an auto attack, -1% AD damage taken per level, or increases protection given by items by 10%