Book Of Plagues

Effects

 * Spawns a random plague in a cyclical order.
 * Blood: Spawns red creep.
 * Boils: Causes enemies to explode in tears when killed.
 * Thunderstorm: Tears fly in from the right that pushes the player, and slow and damage any enemy. Holy light also randomly strikes.
 * Darkens: Darkens the screen.