After a fae turns 18 they quit aging. They can be killed, but if left to their own devices, they will live for thousands of years.
Healing
The ability to cure broken or withered plants; wounds, broken bones, low vitality, and even diseases and restore the emotions and spirits of others.
Glamour
Able to cast vivid and convincing illusions in order to trick others as demonstrated with the illusion on the fae world, making it appear more appealing and beautiful.
Shapeshifting
Faery shapeshifting is not what one normally thinks of when they think of shapeshifting. Faery usually only shapeshift to increase or decrease their size. When they shift, they don't get to pick a random size to shift to. They only have 2 sizes, big and tiny. This shapeshifting is proportional so that they cannot, say, make only one body part larger. This is a Faery only ability.
Flight with Wings
The Faery can fly by way of their wings which can be used at any size due to their supernatural properties. In their large form they can hide their wings. This is a Faery only ability.
Mesmerization
The Faery can make humans do their bidding. The fairy only needs to have eye contact in order to seize your mind with a simple phrase or change in tone of voice.
Chlorokinesis
Fairies can manipulate vegetation. Fairies can grow plants to enormous proportions in nearly any environment, and use them as weapons that can grab and attack with vines and roots, grow or retract thorns.
Oath
When a Faery make an oath or promise the faery and other person must touch fingers and a photokinetic light with come through the promiser's arm. It is possible that if the oath is broken the promiser may die.
Telepathy - With other Faefolk
Faefolk are able to communicate with other Faefolk through telepathy
Invisibility
They have the power to make themselves invisible.
Magic
Magic is very much tied to their relationship with the world, nature, and life.
They can also perform many, if not most, of the spells that witches can perform. The question one has to ask is, what benefit are they? As other magic, their magic is not in and of itself good or evil, but much of their power is used for life. Though it can certainly be used for nefarious purposes and evil schemes.
The comparison to non-Faefolk magic is sketchy at best. They are more powerful healers and more powerful at manipulating the elements. Potions are also more powerful. A Witch would be unable to undo something a Fae had cast. Even changing it would be difficult. Reversely though, a Fae, with some effort could undo or change a witches spell. That said, they tend to stay out of the business of others in that regard.. unless it's personal.
Elemental Magic (General)
They can manipulate the elements. Though, there will always be one element that will be stronger than the others. If they are a water, they can't manipulate fire, if they are earth, they can't manipulate Air (Includes Lightening/ electrical). The oppposite of their strongest element is not available to them. But an Earth elemental may have some control over Water or Fire.
Laoisa - Earth Elemental
She can make plants grow and bring plants back to full health if the rot of death has not started in their roots. Cause the earth to shake or make rocks, stones, small boulders move along the ground.
Animal Affinity
She can calm land and air animals. She can communicate with them as well.
WEAKNESSES
IRON
Iron will weaken the Faery. Keeping one in an Iron Cage when they shift to small will keep them small, or if the cage is large they will be unable to shift or use their powers. An Iron collar will allow them to fly but it will feel like they have a great weight that will get heavier. If you are going to do that, do it when they are big. Iron on Skin contact for prolonged periods of time will begin to burn. Most collars and shackles will be made mostly of something else with a thin band of iron that will ouch the skin enough to leave a thin red line and keep them from using their magic and abilities.
True Names
All Faery have true names. This is the only of the Faefolk which True Names can be used against them. To hold them captive, enslave them or break an oath made with a Faery. They can not be compelled to tell one their true name.
Sweets
They love sweets. They can be used to lure a Faery in their small form especially. Not as suseptable in their large form.
Shiny Things
It does't have to be gold, but it helps. Anything shiny will get their attention. In the Faery's large form they are more able to resist it, but even that has it's limits.
Truth
The Faery cannot out right lie. They can deceive through careful wording but they cannot directly lie.
Salt
a Ring of Salt can trap a Faery as they won't want to go over or under it.