Unit - Add Ability

Ok I have this hero. With a Spell Called Dance of the Sumo
what it does is Uses Blade Spin for like 2 secs causing damage. Then i want it to use Stomp also. So I made 2 Abilities.
Dance Of The Sumo & SumoSTUN
I gave DOTS to the Hero and was making trigger for it when i got to the end of the Trigger where i added the Action
Unit - Add Ability
So i did that and thought to myself this just adds the ability.... it doesnt make Him Learn the ability. So my question is How do i make him Learn the Ability W/O Taking up Spell Points? it has 3 Stun lvls......



--If I can't make it do that Then i guess next best thing would be make it a unit ability...... 3 different Kinds of the Same ability and add/remove them each time he learns a higer VER of the spell.
But i would like to know if the first one is possible.



--Thanks

In TFT editor you can do It, I think. You just add it, then go under hero, modify skill points, add one, then go under hero to hero learn ability. That should solve your problem. After which you can then remove the ability and modify his skill points back to the normal number