Diana Rework Concept

Just had an idea for a new Diana kit. Basically would remove her mana costs and make her focus on the moon orb resource. With this kit she's more focused on auto attacking / being in the fray than as an assassin, as the resource forces her to go in and attack to continue using her abilities. The numbers / costs can be adjusted as needed for balance but here's the general idea:

Passive: Every time Diana auto attacks, she gains an orb of the moon. For each orb of the moon Diana has, her auto attacks do additional magic damage.

Q: Costs 1 orb of the moon. Essentially her Q now. She can spend another orb to reactivate the ability and dash to her target for a brief period after it connects.

W: Costs 2 orbs. Diana becomes the moonlight itself, granting her a shield and increasing her movement speed. While the shield persist, she ignores unit collision and can move through walls.

E: Costs 1 orb. Diana bathes targets around her in moonlight, damaging and slowing them briefly. Targets are revealed while bathed in moonlight and attacking them restores health to diana.

R:* (short-ish cooldown) Costs atleast 1 moon orb. *Diana expends all of her moon orbs to do a tremendous magical slash in an area in front of her. Depending on the amount of orbs this gains additional effects:

2: The ability gains 30% spell vamp. 3: Units are are afflicted by a mini knock up and slow. 4: The slash is projected out from diana as a wave.