AD Scaling Support idea
Some people were talking about how it would be cool to have a support scaling off of AD.
For fun, I tried to figure out how you could make a champion who would want to build offensive AD items but would also want to play in the support position and would provide his team with utility.
The basic idea is to scale utility off of ad/crit and to strongly limit the power of his kit when no allies are present.
Passive: Critical strikes on a stunned target deal an additional 1.5 x AD damage.
Passive: dealing a crit grants MR & Armor equal to AD for 1.5 seconds
Skill 1: Slow Zone - places a rectangular slow zone in target location which lasts for 5 seconds. Enemies within this field are slowed by 10% + .4x(%crit chance) as long as they are in the field. Targets in the field for more than 2 seconds are stunned for .5 + .1x(Bonus AD) seconds. Moving out of the field does not reset the counter (eg., if you are in the field for 1.5 seconds, exit the field, then reenter it for an additional .5 seconds, you would be stunned).
Skill 2: Jump 500 units beyond target allied champion and obtain a shield for 40/50/60/70/80 + 2x(Bonus AD) + 3x(%crit chance) HP. This shield blocks damage only in the direction your champion is currently facing. The shield decays over two seconds.
Skill 3: jump through allied champion. Both you and target ally obtain 10% + .2x(%crit chance obtain)% increased movement speed and attack speed for 3 seconds.
ultimate: nocturne/khazix ult hybrid -- all enemy champions within 1500 units have their vision reduced to 300 units for one second. Can be reactivated up to three times with a 1-second internal cooldown
Skills 2 & 3 force this champion to be played as a support, as he has no mobility without allies present and his skills do no damage.
Skills 2 & 3 give him a pattern of harassing in lane -- use skill 2 to jump through your ally to harrass the enemy; use skill 3 to get back out.
Skill 1 provides utility to his team by slowing enemies in an area. It is also gives him the opportunity to stun a target and utilize his passive.
The ultimate is weaker than Nocturnes ult in some ways but stronger in others: it is not global and works in only 1-second bursts, but, on the other hand, it can be reactivated three times, so it can be used to play mind games with enemies by doing one thing in between ults an doing another during the ult (e.g., disengaging, reengaging).
Thoughts? How would you change this kit to make it balanced as a support? I'm not sure if this kit would be under-powered or over-powered.