Your Dexterity score increases by 2, and your Wisdom score increases by 1.

You gain proficiency in one skill of your choice, from: Acrobatics, Intimidation, Perception, Stealth, or Survival

Fangs. As an attack action, an Arachne may bite a restrained creature with their fangs. Dealing 1d4 piercing damage and the creature must then make a constitution saving throw (DC = 8 + proficiency + Arachne level), becoming paralysed for 1d4 +1 hours (scales at higher levels to 2d4 at level 5, 3d4 at level 11 and 4d4 at level 17) on a failure.

Note: The DM rolls the paralyse D4 in secret.

Your creature type is considered to be both humanoid and monstrosity.

You have a climb speed equal to your walking speed. You can climb surfaces, including upside down on ceilings, without needing to make an ability check. Additionally, you ignore movement restrictions caused by webbing.

You can produce webbing from your spinneret glands a number of times equal to your CON modifier. The duration of the webs are indefinate but can be destroyed by normal means. A web has an AC of 15 and HP30 for each 10ft area of webbing and is vulnerable to fire damage. You regain the ability to make webbing after a short rest once you have exhausted your supply.

While in contact with a web made by her, the Arachne knows the exact location of any other creatures in contact with the same web.

While not wearing armour, the Arachne's AC calculation is 11 + DEX modifier.

You know how to speak, read and write Common, Elvish and Undercommon