In his prime, the Magus possessed vast cosmic power. He possessed superhuman strength (above Class 100) and cosmic energy powers sufficient to defeat the pre-resurrection Thanos in personal combat. He could also become intangible, teleport and create teleportational portals to accommodate an army. The Magus also possessed certain vaguely defined "hyper senses" that granted him superhuman perceptive abilities. Presumably, this was some form of Cosmic Awareness. The Magus also wore a yellow soul gem on his brow that could project exotic radiation for a variety of effects. It is unknown whether this gem could steal souls or contained a Soul World.
This Magus, maybe, the current Magus can't.