Only to offset disease penalties

Only to offset disease penalties is a limitation designed for applying to the Reliable enhancement for Healing.
It is used for Lay on Hands (Enhanced) on page 15 of Divine Favor.
Reliable 8 is normally +40% but this limitation reduces the value to +20% implying it is -50%
This differs from Disease Only which is normally only -40%, as seen in the other limited enhancement Reduced Fatigue Cost 5 (normally +100%) being reduced to +60%.
60% of 40% is +24% so it being a cheaper +20% might just be rounding down (even though costs are normally rounded up) for an aesthetic "nearest five".
There could be some rationale behind this though: Reliable has an extra use beyond the basic roll for curing lost HP or diseases. It is also (like Talent) normally applied to things like Extra Effort or Temporary Enhancements or Using Abilities at Default.
Presumably this limitation excludes reliable applying to those Stunts which could justify a further reduction than normal for "disease only".
Category:Limitations