Gravity Mage Champ Concept

I have i crazy idea for mage champ that can control gravity but i think it may be too complex. tell me what you think thogh.

Passive:Gravitational Field All units move faster when going toward this unit and slower if they are running away. The oppisite if true if this unit is Weightless.

Q:Gravity Switch All enemy units in an area are knocked up. If an enemy is Weightless, they are only slowed(AP scales)

W:Feel the Pull Increases gravity in a determined direction for a unit (enemy or ally). This launches the unit in the direction,damaging enemy units. If it is and enemy unit and they are thrown at a wall or sandwiched into a wall by a unit they are stunned. The distance thrown is increased if the unit is weightless.(AP scales)

E: Weightlessness Makes an unit weightless for X secs. weightless targets can be knocked back by all attacks. if the knock back hits them into a wall they rise up and become untargetable for X secs. If the weightless unit is an ally their movement speed is increased and if it is an enemy they take more damage.

R:Black Hole Traps and Grounds all units in an area. Enemy units take continual magic damage.Weightless targets take no damage and leave and enter freely.(AP scales)

Let me what you think and if it is too op,. thx