User blog comment:LivesByProxy/Heir To Blackblade: Fulfilling League's Thief Fantasy/@comment-24385282-20160409173312/@comment-26815373-20160411184140

Will has it here, as she's not suppose to feel like a sniper, hitting enemies over huge distances. I did, however, tweak her W so now she gets a 'lingering' sight over enemy she sees with Keyhole. This is to help with her new passive, as she can now 'spy' on enemies while behind terrain, inside / outside of her corridor, and then hit them with her passive for tons of damage!

Also, @Green, I didn't intend on her casting spells while using Keyhole, as it is a channeled effect, but having her be able too sounds like it could allow some awesome plays. So, I'm going to say she can. ;P