Trying to make myself feel better about how many times I've killed Anzu now.

mount.rb

require "rubygems"
require "gruff"

graph = Gruff::Line.new

graph.title = "Drop the damn mount already..."

graph.data("%", (1..800).map { |y| (1 - (0.99 ** y)) * 100 })

graph.labels = {0 => "1", 50 => "50", 100 => "100", 250 => "250", 500 => "500",  750 => "750+"}
graph.hide_legend = true

graph.x_axis_label = "Number of attempts"
graph.y_axis_label = "% chance it should have dropped by now"

graph.write("mount.png")