Champion Idea: Talia, The Heart-Seeker
Note: Ability Power Support Passive - Seeker: once she find a champion that is 30% low hp everyone around gain movement speed (she also) by 20% (much like Warwick)
Ability 1 (Q) - Ring of love: Talia shoots out a ring of love that snares the first enemy it hits. Dealing about 90/110/130/150/170.
Ability 2 (W) - Love Bond: Much like Karma's rope, Talia insteads links her rope to an allie healing 5% of the missing health and herself. Once it fully upgrades it heals about 25%
Ability 3 (E) - Flower Bomb: Talia shoots out a cone of flowers that explodes dealing 35/40/45/50/55.
Ability 4 (R) - HeartSeeker: Talia Strikes at a champion causing her to be untargetable (when striking) and stunning the first champion she connects with Dealing 200/250/300.
and
and called it a day
's manna transfer. It would seem like that would balance it out a little bit more. You could give it a really long cool down to compensate also, but it would feel like it would still need some work if you did just put the long CD on it. You also could put repercussions on it if you break the chain too early too increasing the risk for a well deserved reward. You would have to change it into a channel HOT (Heal Over Time) kinda thing which could be a new mechanic to the game. It would be like a 
Vorpal Blade but cooler and more direct.