2, it is not feasible; there are no special effects here.
3, we can try.
Added 2 minutes ago
Here is some information for you:
It is not possible to: give a piece of one model to another; there is no such system as in Heroes 5.
Change the parameters of the ability.
Note that we are considering six icons, and each is colored separately.
Added 4 minutes ago
After the Ifrit, I will try to create a new Mizrael.
Added 39 minutes ago
The Ifrit model. Here it is for your evaluation. The icons are on the left. Due to some difference, the color on them and the texture itself turned out to be slightly different.

Added 40 seconds ago
There is a Fire Strike ability.