Drider

The monster can climb difficult surfaces, including along ceilings, without needing to make an ability check.

While in sunlight, the monster has Disadvantage on ability checks and attack rolls.

The monster ignores movement restrictions caused by webs, and the monster knows the location of any other creature in contact with the same web.

The monster makes three attacks, using or in any combination.

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The monster casts Darkness, Faerie Fire, or Web, requiring no Material components and using Wisdom as the spellcasting ability (spell save DC ).