discover_syncretism_tenet_effect

discover_syncretism_tenet_effect = {
	if = {
		limit = { is_playable_character = yes }
		if = {
			limit = {
				scope:target.religion = religion:christianity_religion
				religion != religion:christianity_religion
				NOT = {
					knows_tenet = tenet_christian_syncretism
				}
			}
			add_known_tenet = tenet_christian_syncretism
		}
		else_if = {
			limit = {
				scope:target.religion = religion:islam_religion
				religion != religion:islam_religion
				NOT = {
					knows_tenet = tenet_islamic_syncretism
				}
			}
			add_known_tenet = tenet_islamic_syncretism
		}
		else_if = {
			limit = {
				scope:target.religion = religion:judaism_religion
				religion != religion:judaism_religion
				NOT = {
					knows_tenet = tenet_jewish_syncretism
				}
			}
			add_known_tenet = tenet_jewish_syncretism
		}
		else_if = {
			limit = {
				scope:target.faith = { has_doctrine = eastern_hostility_doctrine }
				faith = {
					OR = {
						has_doctrine = abrahamic_hostility_doctrine
						has_doctrine = pagan_hostility_doctrine
						has_doctrine = sinitic_hostility_doctrine
					}
				}
				NOT = { knows_tenet = tenet_eastern_syncretism }
			}
			add_known_tenet = tenet_eastern_syncretism
		}
		else_if = {
			limit = {
				scope:target.faith = { has_doctrine = sinitic_hostility_doctrine }
				faith = {
					OR = {
						has_doctrine = abrahamic_hostility_doctrine
						has_doctrine = pagan_hostility_doctrine
						has_doctrine = eastern_hostility_doctrine
					}
				}
				NOT = { knows_tenet = tenet_sinitic_syncretism }
			}
			add_known_tenet = tenet_sinitic_syncretism
		}
		else_if = {
			limit = {
				scope:target.faith = {
					OR = {
						has_doctrine = unreformed_faith_doctrine
						has_doctrine = west_african_unreformed_faith_doctrine
					}
				}
				faith = {
					NOT = {
						has_doctrine = pagan_hostility_doctrine
					}
				}
				NOT = {
					knows_tenet = tenet_unreformed_syncretism
				}
			}
			add_known_tenet = tenet_unreformed_syncretism
		}
	}
}

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