Pucai have these basic fey powers:

• Pucai can vanish and become insubstantial by speaking their True Name into a mirror.
• A circle of salt will protect a puca from supernatural powers for as long as it goes undisturbed.
• Any puca being may summon a faeriesteed by whistling three special notes.

A puca can shapeshift their natural form by putting on a mask, taking one of the above-listed forms. They can create illusions for any sense by covering the part of their body that senses it (holding their nose, covering their ears, closing their eyes, rolling their tongue, or putting their hands in their pockets or wearing gloves). They can cast cantrips (minor spells of any energy) by throwing small objects on the ground.

They can view the threads of fate by plucking their own hairs and weaving them. They will take crops left over after Samhain, rotting anything still ripe after they eat.

Each of their forms has its own special power:

• In their horse form, pucai are appealing to riders, making them want to ride. One of their favorite pranks is to take mortals for wild rides, but they always drop them off where they started, unharmed.
• In their goat form, they are violent, blood-thirsty, and vampiric, and they will stalk from the shadows travelers in the night, taking their souls if they kill them with their horns and devour their blood.
• In their cat form, they are cunning and stealthy, moving through walls as if they are not there, spying on those within houses and stores, and selling that information to anyone with coin.
• In their terrier form, they are bold and defiant, defending certain places in forests and hills, corners where few go but many would want to. They can sense anyone trespassing in their territory while in this form.
• In their hare form, they are vicious and terrifying, making a keening noise that chills those who hear it, freezing their blood and killing them.
• In their bull form, they will do work for millers, silversmiths, leather-makers, or other craftsmen on a whim. As long as it is based on whim and in secret, they can do almost any work.
• In their raven form, they speak truths they could not possibly know, giving advice and leading people away from harm in the night.
• In their fox form, they can enter the dreams of those who sleep nearby, chasing away nightmares and warping their dreams to be confusion and prophecy.
• In their wolf form, they can kill with their howl and heal with their tongue. They use this form to run for weeks at a time.
• In their eagle form, they can summon deep fog with their wing beats and stop the sun from rising with the flash of their eyes.
• In their goblinoid form, they can make people fall in love by brushing their eyes with flower petals, spoil milk with their laughter, and mimic any animal's voice.
• In their humanoid form, they can speak any mortal tongue if they have heard someone sing in it.

Pucai can bring good fortune to those that please them by leaving a coin or scrap of metal behind. These objects will protect the user from accidents. If they leave a cup of precious metal behind, it will fill with water that brings happiness, but they do this only rarely and for those most deserving.

Pucai can use special rhymes to alter the physical form of others; they can use ancient songs to change the glamour of others. They can alter reality entirely if they gather to collectively recite certain songs or rhymes.

Most powerful of the pucai, Robin Goodfellow, met the King of Faeries one night in the woods, and there he played three tricks upon him. First, he lured the king's horse away, getting it lost in the thick of the wood. Second, he presented himself as the same horse, taking the king for a wild ride, ending with the king being thrown off at his own camp. Third, he, when the king sought to take a seat upon a log, removed the log and had the king fall. At this time, the king, befuddled and outraged, amused and bemused, made demand of the puca to identify himself, and so he did, proudly proclaiming himself the greatest of all puca. As he appared before the king, he made rhyme and pun, jape and tumble, and delighted the fey lord. He was offered a place at court in exchange for the return of the king's horse. Intrigued, he agreed for the span of seven days to play jester.

To the court they rode, and the next morning, Robin Goodfellow was presented to The Queen. Never before had the Puck, as he was known, been awed. Never before had he been smitten. Never before had he been nervous. So impressed was he that at first, he could not even remember the simplest rhyme; fortunately, a rude courtier made comment upon his appearance and silence, and he rose to the moment, making mock of the pompous fey. What followed was the greatest performance of any jester at The Queen's court. The Queen, herself privately awed, declared then and there the pucai were to be protected and cherished at her court, and offered Robin Goodfellow a permanent place. He agreed for his own part, and he brought word to the tribes of the offer.

The tionol immediately agreed, seeing lucrative opportunities, but the comhairle arsa were more measured. They took 41 days to consider, and eventually only agreed because of deep-seated fears of enslavement and persecution from old enemies. So the pucai became part of the Seelie Court and favored amongst it as servants, jesters, and traders. Their cunning and power made them very prominent in the Court, second only to the sidhe. The tionol constantly jockeys for power in the Court, and the comhairle arsa seeks to counter their ambitions and protect their culture in a constant struggle of assimilation vs. authenticity.