Mental Uplink (R): Izsha merges with her Leviathan, resetting her Basic Ability cooldowns and reducing them by 50% and giving them additional effects:
Transfusion- Allies healed are healed for an additional 40 (+4% per level) Health per second that they remain in the Leviathan's range
Poisoned Stinger- Is now targeted and stuns the target for .5 seconds
Worm Assault- The worm emerges immediately and remains for Leviathan's full duration.
Refined Essence (R): Pure Essence restores 50% of the Hero's Mana over the duration and doesn't end Adapted Camouflage.
Hive Memory (Q): Casting Transfusion on a Hero other than the last Hero it was cast on casts an untalented version on each unique allied Hero since Hive Memory reset. This resets when Izsha dies or Transfusion targets the same Hero twice.
Assault Form (W + E): Poisoned Stinger gains 2 additional charges and Worm Assault gains 1.
Now, all this doesnt mean she CANT be a hero who can move, fight, and what have you. Its just odd you ignore this glaring issue without any backstory or explanation to make it plausible.
The next part is purely if you was looking for feedback on the kit itself. If not, then disregard.
For the kit itself, its just boring and doesnt really seem to have a clear and distinct direction or theme. Just a lot of generic type abilities for example, you said
-Adapted Camouflage gives Izsha a unique survival tool and utility.
Its not unique, its literally the same trait zeratul and nova have and they was created back in 2013 as one of the first heroes. We've become so much more progressive and creative than this.
Despite that Izsha has never had anything to do with stealth, if you want to make a stealth support, you need to OWN it otherwise scrap it. Really double down on it. Stealth in heroes has always been for offensive purposes. How creative can you be in making it from a defensive/utility standpoint I wonder. If you want to go this route, make her whole kit revolve around it like Valeera
Q is just generic heal hero for X amount.
W is just generic deal X damage
E is kinda intersting
R1- is literally Tyrande's starfall
R2- Is generic heal hero
To be fair, this is probably one of the hardest designs you could possible do in the starcraft universe because Izsha has such a clean slate of what she COULD do while also being super restrictive because of character design.