Hieratic", known as "Hieroglyphic" (聖
せい
刻
こく
Seikoku) in the OCG, is an archetype consisting of LIGHT Dragon-Type monsters. One of the few sets of cards based on Egyptian motifs, they are based on Egyptian hieroglyphs and Ennead, a group of Egyptian gods in mythology. Their logo is based on Wedjat, the eye of Horus, god of Sky, war, and protection. Also, in addition to Wedjat, if the monsters' backgrounds have either the sun or the moon, they get the respective Wedjat - right (sun) or left (moon).
The cards of this archetype relies on Special Summoning and destroying cards mainly by Tributing other "Hieratic" monsters. What makes this archetype powerful and interesting is that many of its monsters allow you to Tribute from your hand, in a manner similar to Ritual Summoning.
There is another effect which all mid-Level monsters, such as Level 4, 5 and 6, have in common is that when they are Tributed, they are able to Special Summon a Dragon-Type Normal Monster either from the hand, Deck, or Graveyard. It is also mandatory to Special Summon, which means that even though you Tribute them for cost, this effect may still go through. So, despite the idea that you're getting rid of your own monster, you won't lose that much field advantage. Almost all "Hieratic" monsters have relatively simple Summoning conditions.