Merfolk Weapon Familiarity Feat 1
You were taught the most effective weapons of the sea. You gain access to all uncommon weapons with the merfolk trait. You have familiarity with crossbows, heavy crossbows, longspears, spears, and tridents—for the purposes of proficiency, you treat any of these that are martial weapons as simple weapons and any that are advanced weapons as martial weapons.
At 5th level, whenever you get a critical hit with one of these weapons, you get its critical specialization effect.
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.
MerfolkThese aquatic humanoids have an upper body similar to a human and a lower body similar to a fish.