Spider transformation/rideable spiders
The frog is a great addition for crossing rivers and scaling small cliffs, but I'd love a spider transformation to use as a way of scaling larger cliffs or walls. If this was a larger spider, there could be the ability to wrap people in webbing (an option to hold a human in place for feeding later while you fight for example) or if this was a smaller one with the same climbing ability, this could also be used for stealth! If not this, I'd also love an alternate mount in which I can ride spiders. I just love spiders a lot!