Rune King Thor- Odin Force, power and magic of the Runes, wisdom from the Well of Mimir
Lord Marvel- Powers of Shazam, Guardian of the Rock of Eternity
-Thor and Marvel both believe the other is standing in their way of accomplishing something that must be done.
-They have heard of each other but only that they both possess great power.
-The encounter takes place at this location with no inhabitants within 500 miles in any direction. (If this distance is limiting their powers and their fight, they will take their battle to a similar looking, uninhabited realm/planet.
-Both combatants are fighting in character (at this level of power).
-Victory is obtained by any means: BFR, KO, Incapacitation, Death
(I've searched for this battle with both combatants at their highest levels of power several times and could not find anything)