Help with Hero/morph trigger

[CharZard]

I am trying to create a morph spell similar to the one that a unit spell changing the druid of the talon into it's bear form. I wanted to have a very similar spell but instead have it be a hero ability, and would change a hero version of the druid of the talon into a hero version of his bear form. In addition to this I wanted him to have different spells in each hero form. The problem is that when my hero changes from hero form to bear form he doesn't have the ability to get his new spells and he simply changes his visual form. I have realized now that this probably requires triggers to accomplish it, but I have no idea where to even start.
thanks for anyone who can toss me some help on this :)

[Anitarf]

Unfortunately, there is no way to change hero skills once they are learned (unless they are the same base spells with just upgraded stats, in which case you could use Engineering Upgrade).

[CharZard]

Does that mean the spells cant be dropped as well? like if he changed forms he gains some unit abilities and cant use his normal form spells?

[Anitarf]

You could disable/hide the skills the hero has by using engineering upgrade to morph them into alternate passive/disabled versions. The only thing that can't be done is change them into abilities that do something else (like, from an aura to a targeted spell).

If the effects of the spells are triggered, then as long as the spells are targeted the same it should be possible to morph a hero skill of the regular hero into a different skill on the morphed hero. This doesn't really make much sense, though, if the spells are completely different then why would learning one of them mean the hero has also learned the other in his alternate form? It'd probably make more sense to just disable his spells and give him additional unit abilities in his alternate form, like you suggested.

[CharZard]

so if I was going to do something like that, how would I trigger it to drop the hero spells and pick up unit spells?

[Anitarf]

Well, if it's a morph spell like Demon Form, you might not even need any triggers. Simply add the bonus unit abilities and the engineering upgrade ability to the alternate form in the object editor. The engineering upgrade should replace all the hero's regular skills (which the alternate form also has) with placeholder versions that can't be used. Initially, I thought these could be passive abilities so players couldn't click them but this might not work, since engineering upgrade keeps most of the properties of the original spell so the abilities would likely remain active. Instead, you'll probably need to disable the placeholder abilities for all players with a trigger at the start of the game (I guess I was wrong when I said you wouldn't need triggers :) ). This will remove them from the command card, effectively hiding the original hero skills when he morphs. If this is acceptable, you can keep it this way, otherwise you'd need additional passive unit abilities that you'd add to the hero with a trigger when he morphs to represent disabled hero skills on the command card.