User blog comment:Sagee Prime/Champions bugs!!! What are they? I must know!!!/@comment-3516765-20110408075125

Also, if you can't see Pantheon, then you can't see his Heartseeker Strike. He can also cancel his ult before it shows up on enemy screen. If he does this, his cooldown will be set to around 7(?) instead of the full duration. I think you can also abuse this and continue the cast after half-cancelling it (moving just enough so that your channeling stops, but recasting fast enough so that another bar appears before your skill goes on cooldown) and it will continue the channel instead of recasting the skill. (Saw Westrice doing this on his stream, but I don't know how he did it.)