User blog comment:Deathkin12/Champion Concept: Sly, the Sleeper/@comment-58.172.169.27-20120918122058

I like the sleep mechanic (inb4 righteous dota fans), and I got to thinking that it'd really synergize well with a hard nuker with decently long cooldowns, or someone who wants you to sit in their DoT spells (assuming sleep isn't canceled by damage already being done over time; imagine Malz's Null Zone or similar).

Maybe altering her kit to focus more on that sleep CC would be good. You can make the duration of sleep pretty long and it would still be balanced, I think, just because it's canceled by damage and CCs the attacker.