Guardian
He is Illusion by virtue of Stealth and Shadow.
From varying points of view, He changes Appearance. He can be in one place and then another in fractions of the proverbial fraction. He does as His name Implies. He is a Teacher as well. Speculation is still out as to Who He REALLY IS ;-) Certain Mysteries Remain in Tact. He eludes to where He goes from Time to Time, and He Shows how ALL will Pan out. You might be amazed at the Complete Extent to which you have under-imagined regarding Possibilities.