Charred Remains
Feat 9
Source Pathfinder Lost Omens Ancestry Guide
Frequency once per day
Your next fire spell leaves embers in its wake. If your next action is to Cast a Spell with an area and the fire trait, for 1 minute, your spell's area becomes difficult terrain as well as hazardous terrain, dealing 1 fire damage for each square a creature moves through.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
FireEffects with the fire trait deal fire damage, or either conjure or manipulate fire. Those that manipulate fire have no effect in an area without fire. Creatures with this trait consist primarily of fire or have a connection to magical fire.
SpellshapeSpellshape actions tweak the properties of your spells. You must use a spellshape action directly before casting the spell you want to alter. If you use any action (including free actions and reactions) other than casting a spell directly after, you waste the benefits of the spellshape action. The benefit is also lost if your turn ends before you cast the spell. Any additional effects added by a spellshape action are part of the spell's effect, not of the spellshape action itself.