Halo - The Link of the Realms - Champion Concept

Halo is a divine being that refuses to hurt any living thing. Although she prefers not be hostile, Halo was cursed to have a mischievous alter ego that cannot be controlled, Thorne. She tries to ignore it, but it always prevails. On the other hand, Thorne is an evil being that thrives on the suffering of others. Although she prefers to be hostile, there is always something in her that makes her think twice.

Halo - Ranged Looks - Pure white anthropomorphic goat being, with angelic wings, a halo above it's head, small wings on the sides of it's head and large majestic horns. The right leg is blackish red. "Weapon" - Staff (Her "auto attacks" are instantaneous, not a projectile, that means that they can go past Yasuo Windwalls, Braum's shield, etc.)

Thorne - Melee Looks - A blackish red anthropomorphic goat being, with demonic wings, a Demon Vi tail and large demonic horns. The left leg is pure white. Weapon - Trident

Passive: Opposites Halo and Thorne can switch between each other. (Using buttons)

Halo - Halo refuses to hurt anything, so she heals allies with her basic attacks instead. She has the ability to "basic attack" allies. Whenever she "attacks" her allies, she heals them for 60 + 10 per level + 20% of her AP. Halo cannot attack enemies.

Thorne - Thorne refuses to heal anything, so she steals life from enemies with her basic attacks instead. Thorne passively gains 10% life steal + 1%(per level) Thorne cannot heal or "attack" allies.

Q: Sacrifice/Death's Grasp CD: Halo - 0.5 seconds at all ranks Thorne - 7/6/5/4/3 seconds

Sacrifice - Halo links to an ally and gives her health to the linked ally. She can transfer as much health as she wants but stops giving it at 5% HP.

Death's Grasp - Thorne tethers to a target enemy champion or jungle monster for 3 seconds, slowing them for 20/25/30/35/40%, and dealing 30/40/50/60/70 + (30% of her AD) physical damage every second. At the end of the duration the tether splits, dealing 5/6/7/8/9% of the target's maximum health and heals Thorne for 5/5.5/6/6.5/7% of her maximum health

W: Intervene/Demonic Flight CD: Both - 25 seconds at all ranks

Intervene - Halo flaps her wings, knocking back and slowing enemies for 10/15/20/25/30% and granting allies 30/35/40/45/50% movement speed in a cone.

Demonic Flight - Thorne takes flight gaining 40/45/50/55/60% movement speed and the ability to go over walls for 6 seconds.

E: Bless/Hellish Terrain CD: Halo - 14/13/12/11/10 seconds Thorne - 8/7.5/7/6.5/6

Bless - Halo blesses an ally champion granting them 20/25/30/35/40% movement speed and 15% increased damage for 4 seconds.

Hellish Terrain - Thorne slams her trident into the ground, causing hot rocks to jab up around her stunning any enemies in the area for 1.5 seconds and dealing 50/60/70/80/90 + (50% of her AD) physical damage.

R: Sanctuary/Black Hole CD: Both - 3 minutes

Sanctuary - Halo creates a heavenly area for 4 seconds that heals her and her allies for 8/9/10/11/12% of their max health every second. Enemies already inside the area are trapped inside, while enemies outside are kept outside. Dashes, flashes, blinks, lanterns, etc. cannot be used to escape or get in.

Black Hole - Thorne creates an unpleasant area for 2 seconds that pulls enemies to the center and deals 10/15/20/25/30% of their maximum health in physical damage over the duration.

Tell me what you think about this concept. I'm pretty happy with it but I feel like it's OP. Don't be rude. Keep it nice.