Morgana overhaul
Since Riot has announced the new champion roadmap I want to give some ideas how some of Morgana´s abilities could be improved.
Tornment Soil (w):
1.) Far lower cooldown to allow casting several instances of Torment Soil at a time. However overlapping instances do not increase the damage output! It´s more like creating a river or lake like area of effect. Also if possible it should not look like Cassiopeias Miasma circles but more like a single cohesive liquid.
An alternative way this could work: casting Tornment Soil starts as an initial point and grows in any direction over it´s duration (similar to Anivias Glacial Storm). If you cast a second, third, etc these points slowly try to connect eachother dynamically (growing faster in this direction) and creating an individual area of effect.
edit: Since it might be a bit difficult to imagine how this would look like I took all my paint skills and created this masterpiece : https://i.imgur.com/sNTlfg3.jpg
2.) Since you are essentially creating a swamp it should reduce movement speed over time. The longer the area is affected by her ability the stronger this slow becomes (essentially it softens the ground). Something like 5% per half a second (doubled against dashes). Beside logic reasons I think Morgana could need some more capabilities as a controle mage even if that means to take some power away from her Dark Binding.
I feel like auto attacks in lol lack in deversity. That´s why I was thinking about a way this could change.
Soul Siphon (passive):
Morgana´s auto attacks do magical damage only (including a small ap scaling) and become empowered against enemies affected by her abilities. AD, crit and on-hit scalings have no effect.