Moonsilver Blade: Passive [Every spell cast or basic attack adds (x) Moonlight Stacks to Diana's blade, upon reaching 100 stacks Diana gains a shield for (x) seconds and can activate her ultimate Moon's Descent(R). Autoattacks double the Moonlight gains.]
Flourish: Q [Diana swings her blade to unleash a bolt of lunar energy that deals damage in an arc before exploding. Ends upon hitting a champion.]
Defiance: W - Passive [Enemies struck by Diana's spells are afflicted by Defiance, causing her next basic attack within (x) seconds to deal bonus magic damage and slow the target consuming Defiance. Increases Attack Speed by (x%)]
Lunar Rush: E [Diana dashes to target ground location dealing magic damage. The cooldown is reduced by (x%) when striking a target afflicted by Defiance]
Moon's Descent - Eclipse - One With The Moon / Forsaken: R
[Moon's Descent: Consumes all Moonlight stacks to draw in all enemies, applying a slow, an area of effect will remain dealing continual magic damage for (x) seconds, Diana may reactivate it at any time to deal damage instantly and the Ultimate will end reducing the cooldown by (x%). Diana cannot exit the area of effect or the Ultimate will end]
[Eclipse: (x) seconds after Moon's Descent is cast without recasting, Eclipse occurs automatically with all enemy champions caught inside blinded by moonlight unable to see until One With The Moon is cast or Forsaken activates.]
[One With The Moon: Diana transcends sacrificing half of her ability power to gain armor and magic resist and a persisent slowing aura for the duration.]
[**Forsaken: Only occurs if Diana fails to cast One With The Moon within the duration, Diana is enraged that the moon has forsaken her and lower's her defenses by (x%) replacing her other abilities with stronger; and darker; versions, gaining movespeed and attack speed for the duration. Increases Moon's Descent cooldown by (x%-scales down with ability power). **]
Notes: Decisions, decisions, decisions!
This iteration of her kit focuses on good decisions with some pretty significant trade offs, upon successful completion of her Ultimate defense or offense are obtained. By making Diana's playstyle a choice it fits the mold for both those who want to play her as an assassin, as you could channel your ultimate entirely on minions or jungle creatures to come into a fight already empowered by Forsaken, or you could be a front line fighter by soaking damage and gaining massive resistances and a persistent slow effect with One With The Moon.
Flourish, besides a name change this ability is mostly the same, being the ability is the one that defines her the most, with most of it's power gone to Defiance or removed, and Pale Cascade being removed Diana's power has been lowered this spells power can be increased through both an increased hitbox/animation size; a full crescent moon perhaps; and increased damage.
Defiance, removing Pale Cascade you remove Diana's invincibility when ahead, being an ability with no counterplay besides "run" is extremely frustrating.
By changing the damage to a sheen effect Diana is forced to autoattack in between spells in order to kill her target. Also the attack speed component is better here because you can now choose what you want to level up, CDR on Q, Attack Speed on W, or Burst on E.
Lunar Rush, this ability is now a skillshot and it's cooldown is not entirely negated by using it on a target afflicted by Defiance, having Diana's autoattacks consume Defiance it is another choice for Diana to make, decreased cooldown on Lunar Rush or more burst on a single autoattack? This also gives Assassin Diana an escape, where Fighter Diana can't afford to wait for Defiance to go in.
Moon's Descent, a slightly more powerful version of her current E, which opens into a new combo. The AoE would spawn in place like a Zyra ult and stay in place until de-activated by recasting Moon's Descent or activating Eclipse. Leaving the AoE ends the combo.