Giant Owl

The monster doesn't provoke an Opportunity Attack when it flies out of an enemy's reach.

Melee Attack: +4 to hit. reach 5 ft. Hit: 1d10 + 2 slashing damage.

The monster casts one of the following spells, requiring no spell components and using Wisdom as the spellcasting ability: At Will: Detect Evil and Good, Detect Magic 1/Day Each: Clairvoyance

For the duration, you sense the location of any Aberration, Celestial, Elemental, Fey, Fiend, or Undead within 30 feet of yourself. You also sense whether the Hallow spell is active there and, if so, where. The spell is blocked by 1 foot of stone, dirt, or wood; 1 inch of metal; or a thin sheet of lead.

For the duration, you sense the presence of magical effects within 30 feet of yourself. If you sense such effects, you can take the Magic action to see a faint aura around any visible creature or object in the area that bears the magic, and if an effect was created by a spell, you learn the spell's school of magic. The spell is blocked by 1 foot of stone, dirt, or wood; 1 inch of metal; or a thin sheet of lead.

You create an Invisible sensor within range in a location familiar to you (a place you have visited or seen before) or in an obvious location that is unfamiliar to you (such as behind a door, around a corner, or in a grove of trees). The intangible, invulnerable sensor remains in place for the duration. When you cast the spell, choose seeing or hearing. You can use the chosen sense through the sensor as if you were in its space. As a Bonus Action, you can switch between seeing and hearing. A creature that sees the sensor (such as a creature benefiting from See Invisibility or Truesight) sees a luminous orb about the size of your fist.