User blog comment:Willbachbakal/(Champion Rework) Morgana, Fallen Angel/@comment-24558666-20150620164837/@comment-1330314-20150621092030

The passive is meant to affect the strength of all of Morgana's abilities, including her crowd control, so her Q root duration goes up to 3 seconds, as on live, and her W slow can go up to 99% (her R stun can also go up to 3 seconds at max rank).