Widow’s BiteSpell 3
Source Pathfinder Impossible Magic
Traditions Arcane, Primal
Cast

Range touch
Target 1 creature
You conjure up a deadly stinger on your hand and stab a foe. Make a melee spell attack against the target's AC. On a hit, the target takes 1d4 piercing damage and 3d4 persistent poison damage (or double damage on a critical hit). Additionally, the target is Enfeebled 1 until it removes the persistent poison damage.
Heightened (+2) The initial piercing damage increases by 1d4, and the persistent poison damage increases by 2d4.
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.
AttackAn ability with this trait involves an attack. For each attack you make beyond the first on your turn, you take a multiple attack penalty.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
PoisonAn effect with this trait delivers a poison or deals poison damage. An item with this trait is poisonous and might cause an affliction.