Monks

"Contemplatives blessed or condemned to service here. They're bound by their curious vows. We can murder them, or deceive them, but they will not be seduced."

- In-game text

 is an Obstacle appearing during Expeditions. Its Aspect is Guardian.

Defeating
"An order of guardians bound by oath and custom. They are too steadfast for the Grail's seductions - we must defeat them with Edge or bedazzle them with Moth."

- (when confronting the obstacle)

As told by the description, Followers with or  aspects can overcome this Obstacle with a probability depending on the aspect magnitude.

"Faith is a double-edged weapon. These monks have great talent in the matter of believing, and so they have believed our lies."

- The Monks' Delusion (after success.)

The Monks:
 * 1 < < 5: A Desperate Deception. 'We have... relics. *Ancient* relics.'  30% chance of success.
 * 5 <= < 10: A Likely Deception. 'This writ of entry bears the seal of the highest authority. Do not stand in our way -'  70% chance of success.
 * 10 <= : A Potent Deception. 'We have brought here with us certain sacred texts, whose meaning is apparent only in moonlight - '  90% chance of success.

"Their bodies lie in robed huddles, each indistinguishable from the next. Step over, move on."

- The Monks' Silence (after success.)

Our strength...
 * 1 < < 5: ... may not be enough. They are only monks. But they are many, many monks. We might prevail, if we're lucky. 30% chance of success.
 * 5 <= < 10: ... is considerable. We should be more than enough for these holy fools. 70% chance of success.
 * 10 <= : ... is all but irresistible. We will dapple the earth with holy blood. 90% chance of success.

Failure
"They're stronger and wiser than we had supposed. And now their blows have found a mark -"

- The Monks' Wrath (after failure)

Failing to defeat the Monks will result in a 70% chance of a Follower becoming injured.