Those who have fallen under the spell of the all-consuming "Evil Eye"...
"Serziel" and "Medusa" clash over the "Evil Eye of Selene", which is said to grant great power. "Serziel" overloads the "Evil Eye of Selene" during their battle, and thus is reborn as "Zerrziel", who begins plotting to take over the world...
The Japanese name may be inspired by the Buddhist concepts of 呪願 (jugan, a type of Buddhist prayer) and 入眼 (jugan "opening the eyes of a Buddhist statue"). Additionally, the "Watchers of the Evil Eye" are also titled 死徒 (Shito), a blend of 死 (shi "death") and 使徒 (shito "disciple").
The TCG name, Evil Eye, comes from a curse or legend believed to be cast by a malevolent glare, usually given to a person when they are unaware. Many cultures believe that receiving the evil eye will cause misfortune or injury. Talismans created to protect against the evil eye are also frequently called "evil eyes".
Evil Eye is also one of the subcategories of Chūnibyō culture, which is the delusion of gaining special powers through a certain medium (i.e. an "evil eye").
Evil Eye Monsters are named after legends or myths that involve the eye.
The deck is a very slow, stun based deck. The objective is to find a way to Normal Summon "Serziel" or "Medusa" to gain or recover cards to defend your field every possible turn you can summon each. The most common search you will conduct will be for "Evil Eye of Selene" to equip to "Serziel" for disruption against combo decks. Since "Serziel" will destroy some of your own cards every time you use it, you can combo it with artifacts when destroying Special Summoned monsters on your turn.