SFS Standard Magnetic Tuning [two-actions] Focus 3

Area 15-foot emanation
Duration sustained up 1 minute

You amplify the magnetic field generated by your armor’s mechanisms, making it challenging for enemies to approach you. You emit a 15-foot emanation of difficult terrain. You and your allies are unaffected by this aura.

When you Cast the Spell and the first time you Sustain it on subsequent rounds, you can make a spell attack roll against a creature in the area of this emanation, dealing 3d8 bludgeoning damage on a hit.

Heightened (+2) The area increases by 5 feet, and the bludgeoning damage increases by 1d8.