You have advantage on saving throws against poison, and you have resistance against poison damage.
You have proficiency in the Intelligence (Nature) skill.
You have advantage on saving throws against being charmed, and magic can't put you to sleep.
Elves don't need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours. While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.
When you score a critical hit with a melee weapon attack, you can roll one of the weapon’s damage dice one additional time and add it to the extra damage of the critical hit.
You know the friends cantrip. Charisma is your spellcasting ability for it.