Feat: Worldsphere Gravity
Frequency once per hour
Though creating demiplanes usually requires lengthy rituals, you know how to establish minor planar effects in imitation of Syndara's masterpieces. If your next action is to Cast a Spell of at least 5th rank from your spell slots that affects an area, you can apply one of the following planar effects to a 20-foot burst centered within the spell's area. The effect persists for 1 minute.
Gravitational Morass The pull of gravity is amplified here, creating greater difficult terrain. Flying creatures that pass through the area must succeed at a Reflex save against your spell DC or fall to the ground, taking bludgeoning damage equal to half the distance fallen.
Flowing Time Erratic timestreams aid you within this space. A creature that starts its turn in the burst is affected by Haste on that turn.