Is it possible to have multiple Skill Trees?

[Escura]

I am making a Dragon game. The Dragon unit so far has a skill to Fly, and to Land. The Flying Dragon and the Ground dragon, are separate units with different attack amounts. ((Ground Dragon is stronger, Air Dragon is Faster ect))
I'm wondering if it is possible to give each of these hero unit's a separate skill tree. I had them both set up for different skills, but when I switched to Air mode, the dragon still had the skill tree for the ground dragon.

 

[Admit]

You could have 2 diffrent heroes (one flying and one ground) with different "tree's" and when you morph from Air to ground, hide/pause the air unit and unhide/unpause the ground hero. Also when one hero levels up change the level for the other hero to the same level.

 

[Escura]

Thanks for the advice.