I was just giving some example items that I would have built him with. the headband could easily be 'ear ring of intelect' or 'shiny robes of intelect'. The Silent spell comment makes sense though. Will edit it in!
First picture, Elan Psion (Kinetics) 10/Pyrokineticist 10, using only the Expanded Psionics Handbook
Equipment: Torque of Power Preservation, Headband of Intellect +6, Ring of Protection +5, Bracers or Armor +8, Amulet of Natural Armor +5, Gloves of Dexterity +6, Cloak of Charisma +6
The Old man is an ancient Elan Pyrokinteicist. He has a number of powers and abilities he could be using in the picture above.
In the first instance, he is using his Ability of Conflagration, which deals 15d6 fire damage to all within a 30' radius of him. Reflex for half, save is equal to 15+ his Charisma modifier.
In the second instance, he is sinking Power points into Energy Current (fire focus), and Empowering/Maximizing/Twinning the power. This creates a big boom of flame.
Even barring the two instances given, there are numerous ways for this old man to turn you into charcoal.