pam_incite_claim_war_effect

pam_incite_claim_war_effect = {
	scope:secondary_recipient = {
		save_scope_as = sponsored_claim_war_attacker
		add_piety = {
			value = medium_piety_value
			multiply = {
				value = scope:target.tier
				subtract = 1
			}
		}
	}
	scope:recipient = {
		save_scope_as = sponsored_claim_war_defender
		if = {
			limit = {
				NOT = {
					root ?= scope:secondary_recipient
				}
			}
			add_opinion = {
				target = scope:puppet_or_actor
				modifier = incited_claim_war_opinion
				opinion = -50
			}
		}
	}
	if = {
		limit = {
			root ?= scope:secondary_recipient
		}
		custom_tooltip = interaction_claim_war_attacker_tt
		show_as_tooltip = {
			scope:recipient = {
				add_opinion = {
					modifier = declared_war
					target = scope:secondary_recipient
				}
			}
		}
	}
	else = {
		scope:recipient = {
			custom_tooltip = interaction_claim_war_attacked_tt
		}
	}

	scope:sponsored_claim_war_attacker = {
		add_character_flag = {
			flag = temp_no_claim_war_cost
			days = 10
		}
		hidden_effect = {
			start_war = {
				casus_belli = claim_cb
				target = scope:sponsored_claim_war_defender
				claimant = scope:sponsored_claim_war_attacker
				target_title = scope:sponsored_claim_war_target
			}
			remove_character_flag = temp_no_claim_war_cost
		}
		random_character_war = {
			limit = {
				using_cb = claim_cb
				primary_defender = scope:recipient
			}
			save_scope_as = claim_war
			set_variable = {
				name = claim_instigator
				value = scope:puppet_or_actor
			}
		}
	}
	scope:puppet_or_actor = {
		custom_tooltip = inciter_gain_prestige_if_claim_war_won_tt
		if = {
			limit = {
				scope:fund_war ?= yes
			}
			pay_treasury_or_gold = {
				target = scope:secondary_recipient
				value = scope:puppet_or_actor.major_gold_value
			}
		}
		if = {
			limit = {
				scope:join_war ?= yes
			}
			custom_tooltip = claim_war_interaction_join_war_tt
			custom_tooltip = holy_war_cleric_loss_penalty_tt
			scope:claim_war ?= {
				hidden_effect = { add_attacker = scope:puppet_or_actor }
				set_variable = {
					name = claim_joiner
					value = scope:puppet_or_actor
				}
			}
		}
		if = {
			limit = {
				scope:use_hook ?= yes
				has_usable_hook = scope:secondary_recipient
			}
			use_hook = scope:secondary_recipient
		}
	}
}

As written in game/common/scripted_effects/pam_effects.txt.