Fairies have lived alongside small woodland or river creatures for aeons and know most of their language. The languages they know are Sylvan, Aquan and Celestial. However they can also communicate with ease to common woodland creatures such as Deer, Rabbits, Frogs, Newts, Birds, Mice and they can speak to plants. Animals and plants can only do menial tasks which anybody could do such as, pick up sticks or flowers, alert other animals etc. 

The fairy has +2 WIS and +2 DEX

Because the fairy weighs so little, it can stand on extremely thin twigs without them breaking and they make next to no sound whilst walking. Their tiny height means that they can fit in very small places which are at least 2 inches tall and 1 inch wide. It also has advantage on any stealth checks it makes because of its minuscule height. However, the fairy cannot lift any items which weigh more than 1/2 lbs.

If the fairy is within 30ft of a tree, springs, bush or nature, they can help to heal others. The fairy can heal a member of the party with one of their hit die. This can only be done once after a short rest. At level 5 the healing power can be used twice after a short rest and at level 10 it can be used three times.

As well as this, any hit die the Fairy uses whilst within a woodland or lake area, is maximised for itself.