Spell trigger help

Uhm i made a ability name Clone enemy,when cast on an hero caster channel 4s to copy all information about his enemy to create a clone of target unit for him if caster got stun or move during channel then the clone cant complete.I can do all stuff but the problem is i cant make the clone learn Skill (if use if/then/else with condition unit type then it will be a huge trigger cause i have a lot of custom ability)is there have a easy way to make it learn skill????

Uhm i think there no way to make a unit learn skill with easy way and dont use if/then/else +condition unit type of target unit of ability being cast to make it learn by variable ability,another way is like the spell copy cat that make by vexorian but i guess it use caster system(i dont know how to use it >.< and i dont know script too T_T)

EDIT:where i can find ''save&load hero system'' i have search in ''tool'' but cant find it could anyone help me :(