Zephyr can use an action and expend a use of a favored enemy ability to learn whether certain creatures are present nearby, though the information is vague and filtered through her heightened senses.

Zephyr makes a ranged weapon attack from concealment, then uses her bonus action to Hide, reposition, or Disengage.

Zephyr uses Cunning Action to Dash, Disengage, or Hide as a bonus action.

Zephyr can regain 1d10 + 3 hit points as a bonus action.

Zephyr can bond with up to two weapons, summoning either to her hand as a bonus action and preventing others from disarming her. Her bonded firearms and knives are treated as her signature weapons.

Zephyr moves up to half her speed when a hostile creature ends its turn within 5 feet, without provoking opportunity attacks.

Zephyr makes an additional weapon attack during the first round of combat, gains 10 feet of movement for that turn, and deals an extra 1d8 damage if the additional attack hits.

Zephyr uses Action Surge to take one additional action, usually to attack, Dash, or escape.

Choose a favored enemy category. Zephyr specializes in humanoids, particularly criminal syndicates and organized enforcers. She has advantage on Wisdom (Survival) checks to track them and Intelligence checks to recall information about them.

Zephyr is an expert guide through urban ruins, rooftops, alleys, and other difficult environments. She gains benefits when traveling, tracking, navigating, and foraging in her chosen terrain, urban environments.

Zephyr knows the Druidcraft cantrip as a ranger utility spell, adapted to subtle environmental signs and sensory tricks.

Zephyr gains a +2 bonus to attack rolls made with ranged weapons, including modern firearms at the DM's discretion.

Zephyr gains ranger spellcasting. Her ranger spellcasting ability is Wisdom.

At the start of her first turn in combat, Zephyr's walking speed increases by 10 feet, and she makes one additional weapon attack as part of the Attack action. If that attack hits, it deals an extra 1d8 weapon damage.

Zephyr is adept at hiding from creatures that rely on darkvision. While in darkness, she is invisible to creatures relying solely on darkvision to see her.

Zephyr gains proficiency in Wisdom saving throws. If she already had this proficiency, she would instead gain another saving throw proficiency.

Moving through nonmagical difficult terrain costs Zephyr no extra movement. She can also pass through nonmagical plants without being slowed or damaged by them.

Zephyr gains an ability score improvement. Her Dexterity is already highly trained, and this improvement is represented as continued refinement of her combat technique and fieldcraft.

Zephyr gains an additional attack whenever she takes the Attack action on her turn.

Zephyr gains an improvement to Favored Enemy, learning an additional favored enemy category and another language associated with her enemies.

Zephyr gains an improvement to Natural Explorer, extending her urban survival techniques to another favored terrain.

Zephyr gains expertise in Stealth and Perception, doubling her proficiency bonus for those checks.

Zephyr deals an additional 2d6 damage once per turn when she hits with a finesse or ranged weapon and has advantage on the attack roll, or when an eligible enemy is distracted by an ally.

Zephyr knows Thieves' Cant, a secret mixture of coded language, symbols, gestures, and slang used by criminals and street operators.

Zephyr gains proficiency in Nature and Survival. Her proficiency bonus is doubled for ability checks using those skills.

Zephyr gains proficiency with all armor, shields, simple weapons, and martial weapons from her fighter training. Her preferred field weapons include pistols, suppressed submachine guns, knives, and other weapons represented by appropriate 5e weapon statistics.

Zephyr gains a second fighting style. She chooses Defense, gaining a +1 bonus to AC while wearing armor.

Zephyr gains Eldritch Knight spellcasting. Her Eldritch Knight spellcasting ability is Intelligence, and her spells are primarily drawn from the abjuration and evocation schools.

Zephyr gains an ability score improvement at ranger level 8. She uses this training to sharpen her reaction speed and battlefield awareness.

Zephyr knows the secret patterns of the city, including hidden alleys, underground routes, rooftop paths, and the movements of criminal and mercantile organizations. She can find her way through urban environments at full speed and identify safe places to hide or rest.