Cackle
With a quick burst of laughter, you prolong a magical effect you created. You Sustain a spell.
Traits
An action with this trait requires a degree of mental concentration and discipline.
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.
A hex is a spell caused by your patron's direct attention and intervention. Your patron does not take well to being disturbed repeatedly, so you can cast only one spell that has the hex trait each turn; attempts to use a second automatically fail and usually cause your familiar to hiss in displeasure as your patron rejects your call.
This indicates abilities from the witch class.