while Tzeentch was researching the Well of Eternity, it knew it connected to the multiverse but it never experienced something… out of its universe before. Until it felt a powerful disturbance in the Warp. Something not from the place it currently resides... or maybe even universe. It becomes alert, and for good reason. A person is shot out of the Well at high speeds, crashing onto the floor with a loud ‘thump’ sound. Tzeentch stays quiet and stoic, not showing its shock.