W.I.T.C.H. Omnibus 1 is the first volume of 15th anniversary book which collects the first six issues from Arc 1: The Twelve Portals of the comics. It was published by Panini Comics on 15th March 2015. It also contained some pages of extra content.
- Issue 001: Halloween
- Issue 002: The Twelve Portals
- Issue 003: The Dark Dimension
- Issue 004: The Power of Fire
- Issue 005: So Be It Forever
- Issue 006: Illusions and Lies