I'll play to this, and I think this'd be a really great idea.
If I can, I'd like to have a bit of fun and come up with potential recall ideas.
: Holds his ball of blood in the air while a small pool forms at his feet, at the end of the channel he sinks completely into the pool and rises out of it at base.
: Smoke bomb? Takes out a big scroll and uses it to teleport to base? At the very least just redo his ult animation for recall. As a quote perhaps: "They won't even know I'm gone."
: Opens his spelltome and reads it before snapping it shut just as the recall ends. Think VU Karthus with less flair. Lots of small charges of magical lightning around him while he does it.
: Juggles the bottle in his hand for a few seconds before taking a swig as the animation ends.