tomofhyrule wrote: »Those skills (and other similar ones) are specifically designed to be stamina morphs for stamina characters. The alternate morph is still the magicka version which does the same thing with the other resource.
While the animation itself my be a cast, there are plenty of examples of casting spells from stamina in the game (Vigor, Rapids, Momentum, Defensive Posture, a fair number of the Necro and Warden abilities). It's so a character who's focused on stamina (and therefore doesn't have much magicka) can still make use of these skills.