As a tiny creature you have some advantages and disadvantages. Your dexterity score increases by 2, but you strength score decreases by 5.

As a tiny creature, some of the normal rules of adventuring for small and medium creatures need to change slightly to reflect how much smaller you are. As such, the following rules apply to you:

• You may occupy the same space as any other creature of your size or larger
• If you would normally gain half cover, you instead gain three-quarters cover. If you would normally gain three-quarters cover, you instead gain total cover. You also gain half cover from objects that would otherwise be considered incidental, such as rocks or tree saplings
• You may only use diminutive versions of weapons and equipment.
  • Diminutive weapons are specially-crafted for tiny creatures, are half their normal weight, and deal half their normal damage (minimum 1). Weapons with the heavy, two-handed, or reach properties cannot be made diminutive, and you cannot use them. You do not benefit from weapons with the light property when wielding one in your off-hand when two-weapon fighting, versatile weapons must be wielded in two hands and deal their basic damage rather than their versatile damage, and you only gain the benefits of finesse weapons if they also have the light property.
  • Diminutive armor is specially-crafted for tiny creatures and is ½ its normal weight. Armor that imposes disadvantage on Dexterity (Stealth) checks cannot be made diminutive. Using armor you are not proficient with prevents you from being able to fly.
  • You have disadvantage when trying to use non-diminutive versions of weapons or equipment that a small creature could normally use (provided your above restrictions), and cannot use weapons or equipment made for medium creatures or larger.
• You gain a +2 bonus to your AC due to your tiny size

You have advantage on saving throws against being charmed, and magic can't put you to sleep.

as an action at level 3, fey folk can magically turn invisible until its concentration ends (as if concentrating on a spell). Any equipment the pixie wears or carries is invisible with it. You may use this feature once per long rest.