Gravity Weapon
You build up gravitational force and funnel it into your blows, leading to more powerful attacks with blade and bow alike. On your first weapon Strike each round, you gain a status bonus to damage equal to twice the number of weapon damage dice.
Spell Effect: Gravity Weapon
Traits
Focus spells are a special type of spell attained directly from a branch of study, from a deity, or from another specific source. You can learn focus spells only through special class features or feats, rather than choosing them from a spell list. Furthermore, you cast focus spells using a special pool of Focus Points—you can't prepare a focus spell in a spell slot or use your spell slots to cast focus spells; similarly, you can't spend your Focus Points to cast spells that aren't focus spells.
This indicates abilities from the ranger class.