What do you get for winning a Raze Mandala Capital 01 war in CK3?

The defender's Mandala Capital 01 becomes Ruined (patch 1.20.0.3).

What does the Raze Mandala Capital 01 casus belli cost?

piety; the amount depends on the titles, claims and distance, worked out when you declare.

Casus belli · Mandala

Raze Mandala Capital 01

All Under Heaven

Raze Mandala Capital 01 is a casus belli in Crusader Kings III (mandala). If the attacker wins: The defender's Mandala Capital 01 becomes Ruined. If the defender wins: The attacker's Mandala Capital 01 becomes Ruined. Declaring it costs piety. The war goal is worth 1% war score. It needs All Under Heaven. Patch 1.20.0.3, from game/common/casus_belli_types/tgp_eastasia_wars.txt.

Quick answers (3)

What do you get for winning a Raze Mandala Capital 01 war in CK3?: The defender's Mandala Capital 01 becomes Ruined (patch 1.20.0.3).
What happens on a white peace?: The defender's Mandala Capital 01 remains immaculate.
What does the Raze Mandala Capital 01 casus belli cost?: piety; the amount depends on the titles, claims and distance, worked out when you declare.

How the war ends

Attacker wins

The defender's Mandala Capital 01 becomes Ruined.

White peace

The defender's Mandala Capital 01 remains immaculate.

Defender wins

The attacker's Mandala Capital 01 becomes Ruined.

If the war becomes invalid

The … has ended: either the attacker … no longer a Mandala Ruler with an unRuined Capital, or the defender … no longer a Mandala Ruler with an unruined Capital.

Who can declare it

The game shows no text of its own for these conditions; the script is below.

Every mandala war (the group's allowed_for_character) (5 lines of game script)

herders_and_tributary_constraints = yes
pam_personal_pacifism_offensive_war_ban_trigger = yes
NOT = {
	government_has_flag = government_is_theocracy
}

As written in game/common/casus_belli_groups/00_casus_belli_groups.txt.

Attacker (allowed_for_character) (3 lines of game script)

has_tgp_dlc_trigger = yes
government_has_flag = government_is_mandala
has_mandala_capital_trigger = yes

As written in game/common/casus_belli_types/tgp_eastasia_wars.txt.

Defender (allowed_against_character) (3 lines of game script)

government_has_flag = government_is_mandala
is_landed = yes
has_unruined_mandala_capital_trigger = yes

As written in game/common/casus_belli_types/tgp_eastasia_wars.txt.

Cost to declare

Costs piety. The amount is worked out when you declare (by the titles targeted, claims, distance and more), so the script is shown as written:

Cost (15 lines of game script)

piety = {
	add = {
		value = 100
		desc = CB_BASE_COST
	}
	multiply = common_cb_piety_cost_multiplier
	if = {
		limit = {
			scope:attacker = {
				is_story_godking_trigger = yes
			}
		}
		multiply = 0.25
	}
}

As written in game/common/casus_belli_types/tgp_eastasia_wars.txt.

Source: game/common/casus_belli_types/tgp_eastasia_wars.txt and the English localisation, Crusader Kings III 1.20.0.3. “The attacker”, “the defender” stand where the game names the character; “…” marks other words it fills in during play.