Hero will gain 1 undroppable item at start. (he can carry 4, + this one, + empty slot so he can pick other items and trigger bag, backpack, item drop etc etc)
Item (like spell book) will have next abilities:
- Summon Pet (Different item summon different pet)
- Unsummon Pet (he will gain some mana, % of pet current hp)
- Call back (teleport pet back to hero)
While summoned pet will drain HERO mana (ACV is important here, ranger has it's value 2.0 so he will be only hero that won't lose mana ^_^ ) over time.
I will work on this right now.