I assume the 12k cost is a joke cause damn that's so overkill. Smaller hitbox is pretty funny tho but I'm not sure how good it would be. For gun or skill shot heroes sure but for more burst based characters this is sort of nothing since size doesn't really matter.
Honestly this could even just be a T3 without any extra stats and a solid T4 with stats attached.
Personally I would suggest these stats to be attached on the effect:
- Slow Resist and Move Speed for the active effect, this makes sense since a reverse colossus would mean escape and these stats would benefit the effect given to you.
- Instant Stamina or Booster Stamina regen for the active effect (But I'm less convinced of this). Instant Stamina would be quite strong but would be really cool imo (This would probably make the item a pretty strong T4). Stamina regen is less powerful and would make more sense if it was paired with the other stats mentioned above.
This could be a neat upgrade to enduring speed, it makes kind of sense and I don't think an enduring speed upgrade would be too bad or throw the item off balance too much (Personally always thought stamina was better than speed so this item could help balance those two item types out a bit more)