Doing damage to entity in the name of other entity

Hi, in the first, im spanish, so sorry for my bad english

I know there is a procedure-block thats make damage to an entity, but i didn´t see any procedures to make damage to an entity in the name of other

For example, im doing a magic mod and i want the spells to kill entities, but i need that the kills counts for the player and not to the spell entities

Thanks and pls help