Wow, that sounds cool. Or maybe add it as a model for one of the heroes, then you wouldn't need an attack animation.
Added 13 minutes later
Remember I mentioned the Substance Painter program?
I'm currently using it to create a new texture for the Ancient Golems and want to show in a few screenshots why it's worth using this program, even if you're just doing a "repaint" of an existing model.
Here, for example, are different basic "smart" materials. This result is achieved in less than 30 seconds. Of course, this is a draft that needs to be refined later.



Want to paint directly on the model in 3D? Painter can easily do that.

Want to add a scorch mark from a shot or lightning from clothing? Or any other detail made using your own alpha. It takes just a minute.

What about simulating broken glass, raindrops, or other "physical" effects? Go ahead.

Painter is not more difficult to learn than Photoshop and works on the principle of layers. It's a very common program in the industry. I'm telling you, the models from Heroes 7/6 were painted in it.
The main feature of Painter is that, based on the geometry of the high-poly and/or low-poly model, it generates maps, based on which it then creates "smart" masks. In this way, for example, it can automatically create wear and tear in areas of bending and other cool things.
In short, I highly recommend it to everyone who is interested in reskinning or even more so in creating their own models. This program or its analogue is a must-have.
Added 8 minutes later
There are not just many, but a ton of various video tutorials on Painter (in English or, if it's too difficult, in Russian) on the internet.
Here, for example, is a good, simple, and easy-to-understand tutorial for beginners:
a tutorial on painting a chest from "Krivoruky Modeler"