coronation_oath_reward_effect

coronation_oath_reward_effect = {
	save_scope_value_as = {
		name = oath_base_value
		value = {
			value = 200
			switch = {
				trigger = var:$VARIABLE$
				2 = {
					multiply = {
						value = 1
						add = 0.4
					}
				}
				3 = {
					multiply = {
						value = 1
						add = {
							value = 0.4
							multiply = 2
						}
					}
				}
				4 = {
					multiply = {
						value = 1
						add = {
							value = 0.4
							multiply = 3
						}
					}
				}
				5 = {
					multiply = {
						value = 1
						add = {
							value = 0.4
							multiply = 4
						}
					}
				}
				6 = {
					multiply = {
						value = 1
						add = {
							value = 0.4
							multiply = 5
						}
					}
				}
				7 = {
					multiply = {
						value = 1
						add = {
							value = 0.4
							multiply = 6
						}
					}
				}
			}
		}
	}
	coronation_oath_legitimacy_effect = { VALUE = scope:oath_base_value }
	coronation_oath_prestige_effect = { 
		VALUE = scope:oath_base_value 
		PRESTIGE_MULTIPLIER = 2
	}
	remove_variable = $VARIABLE$
}

As written in game/common/scripted_effects/10_ach_effects.txt.