meaning of a pic with a dragon & wizard

[pastlifewizard]

i have seen pic with dragons & wizards some just in the same pic ,sometimes the wizard with a dragon appearing from another dimension,sometimes a wizard and a dragon kneeling for him and others a wizard summoning a dragon,a dragon fighting with a wizard or simply the dragon with some kind of krystals or a dragon with his body around a castle
know what is the meaning of any of these?

[Summer]

I am not sure about the meaning, so I plead the 5th this time. ;D