Gravity functions differently in Blade and Sorcery than Fire and Electricity. Gravity can be considered an upgraded form of your latent telepathy. When close enough to an enemy, you can grab them based on the reticle's location; holding the grip button without touching the trigger activates the spell. Trigger and the bottom face-button (A/X) pull or push the controlled object, respectively, in both Telekinesis and Gravity in B&S.