What are the requirements for Extol Virtuousness in CK3?

The character you target: Is an Adult. (patch 1.20.1.2)

Will the AI accept Extol Virtuousness?

Yes: it is accepted automatically.

Interaction · Friendly actions

Extol Virtuousness

from 100PietyAccepted automatically

House Head Interaction Extol the recipient's virtuousness in order to bolster their reputation and steer House Unity towards Harmonious

What you need

You

Your Government is Clan
house.house_head ?= this
If played by the AI:
- Is an Adult
- Does not have the Trait: Paranoid
- Is at not War
The target is not you
scope:recipient.house ?= scope:actor.house

The character you target

To send it

Is an Adult

To see it in the menu

Does not have the Trait: Extolled by House

Extol Virtuousness is a friendly character interaction in Crusader Kings III. The character you target needs: Is an Adult. Accepted automatically. It costs Piety (from 100). Patch 1.20.1.2, from game/common/character_interactions/00_house_head_interactions.txt.

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Quick answers (3)

What are the requirements for Extol Virtuousness in CK3?: The character you target: Is an Adult. (patch 1.20.1.2)
Will the AI accept Extol Virtuousness?: Yes: it is accepted automatically.
How much does Extol Virtuousness cost?: Piety (from 100) (patch 1.20.1.2).

Will they accept?

The other character has no choice: the game accepts it automatically.

What happens

Effects

Stress and fulfillment impact: by trait: Sadistic +20, Callous +20
The character you target:
- If has the Trait: Accused of Decadence: Loses the Trait Accused of Decadence
- Otherwise: Gains the Trait Extolled by House
- Opinion: Extolled My Virtuousness
If
- You: Government is Clan
- The character you target: Government is Clan
- Your house is the target’s
- If
  You are not the target
  Then
  You are not the target
Then
- Your house:
  add_unity_value = { … }
Else if
- No
- You: Government is Clan
- Your house: Has you as house head
- One of these
  All of these
  exists = scope:recipient.house
  Your house is not the target’s
  or
  The character you target: Is Lowborn
Then
- Your house:
  add_unity_value = { … }

When it is accepted automatically

The character you target: Event char_interaction.0042

Events it fires: char_interaction.0042

• the game's own tooltip text · ◦ our reading of the script line · code the script where neither exists

Who can use it and sees it (is_available, is_shown) (19 lines of game script)

is_available = government_has_flag = government_is_clan
house.house_head ?= this
trigger_if = {
	limit = {
		is_ai = yes
	}
	is_adult = yes
	NOT = {
		has_trait = paranoid
	}
	is_at_war = no
}
is_shown = scope:recipient != scope:actor
scope:recipient.house ?= scope:actor.house
scope:recipient = {
	NOT = {
		has_trait = extolled
	}
}

As written in game/common/character_interactions/00_house_head_interactions.txt.

Can be sent when (is_valid…) (3 lines of game script)

scope:recipient = {
	is_adult = yes
}

As written in game/common/character_interactions/00_house_head_interactions.txt.

Effects (on_send, on_accept, on_decline) (37 lines of game script)

on_accept = scope:actor = {
	stress_and_fulfillment_impact = {
		sadistic = minor_stress_impact_gain
		callous = minor_stress_impact_gain
	}
	send_interface_toast = {
		type = event_toast_effect_neutral
		title = extoll_interaction_notification
		left_icon = scope:actor
		right_icon = scope:recipient
		scope:recipient = {
			if = {
				limit = {
					has_trait = decadent
				}
				remove_trait = decadent
			}
			else = {
				add_trait = extolled
			}
			add_opinion = {
				modifier = extolled_virtue_opinion
				target = scope:actor
			}
		}
	}
}
add_clan_unity_interaction_effect = {
	CHARACTER = scope:actor
	TARGET = scope:recipient
	VALUE = major_unity_gain
	DESC = clan_unity_extolled.desc
	REVERSE_NON_HOUSE_TARGET = no
}
on_auto_accept = scope:recipient = {
	trigger_event = char_interaction.0042
}

As written in game/common/character_interactions/00_house_head_interactions.txt.

Category: Friendly actions
Cost: Piety: from 100
Cooldown: 3 years
In the menu: main list
ID: extoll_virtuousness_interaction

Source: game/common/character_interactions/00_house_head_interactions.txt and the English localisation, Crusader Kings III 1.20.1.2. “You” is the character who sends it (scope:actor, or a puppet acting for you); “the character you target” is the recipient.