Superior Darkvision

Accustomed to life in the night time realm, you have superior vision in dark and dim conditions. You can see in dim light within 120 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of grey.

Relentless Endurance

When you are reduced to 0 hit points but not killed outright, you can drop to 1 hit point instead. You can’t use this feature again until you finish a long rest.

Fey Ancestry

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

Trance

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.

Savage Attacks

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.