Every mob you have gotten so far will have certain icons their selection box on the upper left corner that will make clear what the mob is capable or, what it's weakness is just like Ichun's Morph mod.

@Quizer9O8 yeah, that would be very helpful, but I'm suck at drawing, so... if somebody could help me with icons, I would definitely implement this feature.

I would recommend making your icons not to detailed since we're speaking about Minecraft.
This would make it a lot easier to create