This is the basic summary of the card’s effect

The Eye of Timaeus
“By sending a “Dark Magician” monster from your side of the field to the Graveyard, you can Fusion Summon a Fusion Monster from your Fusion Deck that lists that monster as a Fusion Material! And this card has a Rule that always treats it as “Legendary Dragon Timaeus”!”

This same pack includes “Dark Magician Girl the Dragon Knight” who has a powerful effect, and that this card can Special Summon! In addition, this Normal Spell Card is treated as “Legendary Dragon Timaeus”… why on Earth…

Source: http://www.yugioh-card.com/japan/topics/?20140327

Which pretty much confirms the text from the blurry ad before:

The Eye of Timaeus
Normal Spell Card
(This card is also always treated as “Legendary Dragon Timaeus”.)
Target 1 “Dark Magician” monster you control; Fusion Summon 1 Fusion Monster from your Extra Deck that lists that monster on the field as a Fusion Material Monster, using it as the Fusion Material. You can only activate 1 “The Eye of Timaeus” per turn.