Waterfalls featured throughout the Legacy of Kain series where water flowed over the edges of cliffs or ledges. In Legacy of Kain: Defiance, they served a function in puzzles. Raziel would use the Water Reaver to temporarily turn specific waterfalls to ice, effectively making them into scalable walls.
Raziel encountered interactive waterfalls in the Vampire Citadel's Water Forge, Earth Forge, and Spirit Forge.[Defiance/8][Defiance/10][Defiance/12] They were distinguished by the presence of the symbol representing elemental water, which hovered before the base of the torrent.[Defiance]
By plunging the Water Reaver into a waterfall, Raziel could magically freeze the cascade, and scale the ice to ascend to the upper level. However, the ice always thawed back to flowing water after a few seconds, and needed to be frozen again in order to be climbed.[Defiance]
Behind the scenes
The Water Reaver was originally designed for Legacy of Kain: Soul Reaver, but was cut from the final product. PSM reported that the Wraith Blade would have been "imbued with water by passing it through running water (e.g., fountains, spouts, waterfalls)."