Your Constitution score increases by 2, and your Intelligence score increases by 1.

You are undead, so you do not age. You do not suffer any I'll effects that would cause a change in age

You come from a previous life, so you can choose if you are small or medium.

Your base walking speed is 30 feet.

You can see in dim light within 60 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 gray.

You are resistant to piercing and necrotic damage. You are weak to bludgeoning and radiant damage.

You didn't just stumble upon this transformation by chance, Elder Liches have at least some magical talent. You can choose two cantrips from the wizard or warlock spell lists. You can cast each cantrips a number of times equal to 1/2 your level (minimum of once) without expending a spell slot, and intelligence is your spell casting modifier for any that you choose. This feature resets on a short rest.

You can speak, read, and write Common and Infernal.