Scholar is the only class whose gameplay doesn't build up.

WHM: Slowly generate lillies. When you spend them you unlock a new powerful skill. Using it feels satisfying. A reward for keeping an eye on your resources and spending them. (Though arguably not that efficient to do so.)

AST: Collect seals by buffing allies. While buffing doesn't interact with healing, it still builds up to a strong CD ability. The animation is beautiful and its satisfying to fish for the seals to unleash the most potent version of divination. (Though AST lost much of its flavour and support by making every card a flat dps increase.)

SCH: A bunch of disjointed CDs you can use whenever which actually lock you out of other interesting abilities.
Dissipation> No fairy skills or fey gauge
Fairy tether> No fairy skills
Seraph>No tether or veil
Fey gauge is used for 2 mildly potent things, one of wich locks your fairy out of her strongest skills.