fabricate_hook_discovery_effect

fabricate_hook_discovery_effect = {
	show_as_tooltip = { # Target dislikes you
		scope:target.court_owner ?= {
			save_scope_as = court_owner
		}
		custom_tooltip = fabricate_hook_i_may_not_fabricate_again
		scope:target = {
			add_opinion = {
				target = scope:owner
				modifier = fabricated_hook_against_court_opinion
				years = 5
			}
		}
		if = {
			limit = {
				exists = scope:target.court_owner
				scope:target != scope:target.court_owner
			}
			scope:target.court_owner = {
				add_opinion = {
					target = scope:owner
					modifier = fabricated_hook_against_court_opinion
					years = 5
				}
			}
		}
	}

	hidden_effect  = {
		# Set a blocker for Fabricating further Hooks against Court in question
		if = {
			limit = {
				exists = scope:target.court_owner
			}
			scope:target.court_owner = {
				send_interface_message = {
					type = fabricate_hook_bad_message
					left_icon = scope:owner
					title = hostile_scheme_discovery.3002.t

					if = {
						limit = {
							scope:owner != scope:target.court_owner
						}
						fabricate_hook_block_scheme_owner_from_further_schemes_effect = yes
					}
				}
			}
		}
		if = {
			limit = {
				OR = {
					NOT = { exists = scope:target.court_owner }
					scope:target.court_owner != scope:target
				}
			}
			scope:target = {
				add_opinion = {
					target = scope:owner
					modifier = fabricated_hook_against_court_opinion
					years = 5
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_scheme_scripted_effects.txt.