Blood-Nourished Root

It would have been hard to fight the creature dwelling on the dark slide of the island in usual circumstances — after all, below it was the endless expanse of the dark abyss, and humans were not known for their ability to fly. Fighting a Corrupted abomination while hanging from the treacherous stone surface of the underside of the isle was a suicidal task. 

Of course, there were ways to gain an advantage even in that situation. Kai, for example, could indeed fly. Sunny could assume the shadow fiend form, which was perfectly suited for just these kinds of battles. Effie was strong enough to dig a path to the creature from the surface in no time — and so on.