Board Thread:Warhammer 40k General Discussion/@comment-6078851-20130130174042/@comment-3258762-20130213190513

Indeed

As for the priamrch's psychic power: I remembered wrong, Perturabo cannot see into the future, but he can comprehend and look into the Warp like a Navigator can. He is said to have been seeing it since his first waking moment, feeling like a star maelstrom that constantly mocked everything he did.