[hider=Evelynn, the Widowmaker]
Passive: Shadow Walk
	Normal Sight reveals Evelynn at a much shorter range than any other character.  Unless she has attacked a minion or monster in the past 3 seconds, Evelynn is completely invisible to minions.
Q: Blood Spike
	Evelynn continuously drips blood around her, which erupts into spikes that damage all nearby enemies.  This ability is toggled, deals damage per second, and drains health per second.
	Bleeding Interaction: Blood Spike also erupts around any Bleeding enemies within range.
W: Dark Frenzy
	Evelynn breaks free of any movement impairment, and gains a movement speed burst for a few seconds.
	Bleeding Interaction: While on the trail left by a Bleeding enemy, Evelynn gains passive movement speed and heals for a percentage of her max health per second.  If an enemy champion dies while Bleeding, Dark Frenzy's cooldown is refunded.
E: Ravage
	Evelynn attacks a target twice, applying onhit effects with each swipe and causing deep wounds that apply Bleeding.
	Bleeding: The target bleeds, receiving reduced healing, losing health over time, and taking increased damage from Evelynn's basic attacks for 3 seconds.  This leaves a trail that empowers Evelynn, lasting for 2 seconds.  While Evelynn is on this trail, the bleed's duration is reset, for a maximum of 12 seconds.
	Bleeding Interaction: Auto attacks against Bleeding targets reduce Ravage's cooldown.
R: Agony's Embrace
	Evelynn leaps in a target direction, stopping at the first enemy champion hit.  If she hits an enemy champion, she latches onto the target, gaining control of that champion's movement for 2 seconds, during which she drains her enemy and heals herself for a percentage of her maximum health.  Any outside damage or healing that Evelynn or her target take is split evenly between the two of them.
	At the end of 2 seconds, Evelynn dismounts her target, leaving it Bleeding.
	Bleeding Interaction: The damage over time from Bleeding scales up with ranks in Agony's Embrace.
[/hider]

It's a bit of a stretch from Evelynn's current kit, as it repositions her a bit more into the juggernaut area and solidifies her as something of a physical vampire.  I'm hoping it's not too far for you, but do tell me if it is!