When you cast Smite, Holy Fire or Mind Flay you gain Evangelism. Stacks up to 5 times. Lasts for 20 sec. Evangelism (Smite, Holy Fire) Increases the damage done by your Smite, Holy Fire, and Penance spells by 4% and reduces the mana cost of those spells by 6%. Dark Evangelism (Mind Flay) Increases the damage done by your Periodic Shadow spells by 2%.