Upon ending a Frenzied Rage the Warforger makes a CON save that increases in difficulty.  The CON save starts at DC 10 and increases by 2 after every save (regardless of pass or fail).  The CON save resets to 10 upon completing a long rest.  In the event of a CON save pass, nothing happens.  In the event of a CON save fail, the Warforger receives an overheat point (instead of an exhaustion point).  1 overheat point resets per each long rest completed.  Upon receiving 6 overheat points, the Warforger immediately freezes in whatever position they are in and becomes an iron tomb.  The Warforger starts flashing red from his internals and beeping subtly for 10 seconds.  After 10 seconds the Warforger's body explodes with tremendous force and the following effects:

Fire damage that reaches 5 x the Warforger's level in a circular radius (centered on the Warforger's body) - Damage = 1D10 x Warforger's level.

Force damage that reaches 10 x the Warforger's level in a circular radius (centered on the Warforger's body) - Damage = 1D8 x Warforger's level.

Any creature within the Fire Damage range (5 x radius) must make a DEX save (DC = Warforger's level + CON modifier + STR modifier) or the Force Damage range (10 x radius) (DC = Warforger's level + STR modifier).  On a failed DEX save the creature takes the full damage (fire and force if within 5 x radius, force damage if within 10 x radius).  The damage is halved for successful DEX saves.

The Warforger can Frenzy Rage as often as desired without limit, but upon completion of each Frenzied Rage it must make the CON save immediately.  Any affect or spell that triggers the Warforger's Frenzied Rage (whether initiated by the Warforger or not) results in a CON save.

The Warforger does not suffer the effects of exhaustion as points accumulate.