Talk:Katarina/@comment-121.74.69.58-20101008054425/@comment-26220537-20101009163902

It can only be activated within range of an enemy champion.

The icon will light up letting you know it can be used. It's channeled, so you can't move after casting it or it cancels the ability.

If the target champions move out of range, the ability will no longer affect them, though it can find new targets.

Best used after Shunpo for maximum effect.