Unnatural Blood Clone of Crandahar

You cut yourself and bleed on a weapon taking 10 hit points.

You then plunge the weapon into the ground and the magic makes your blood bond with its environment creating a clone of yourself holding the weapon. 

This new creation of yours can use the weapon given and any basic spells and skills. Its stats are the same as yours for health, but -5 of wisdom, intelligence and dexterity.

And after 3 turns it explodes causing shrapnel in a radius of 20 feet with 3D6.

The creation is technically an item and can be used as such. Also as its not a living entity, so it is not affected by toxins, fear, noice, confusion, mind or stamina effects. 

Additionally on your turn you can inflict another 15 hit points of damage to scarifies more blood for the creation to carry on for another 3 more turns. But this can only be done twice. Also after each extension the explosion doubles in radius and damage.