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The Godfrey Icon is one of the Talisman items in Elden Ring that can increase attack power when worn.
The Godfrey Icon can be obtained by defeating Godefroy the Grafted, a boss fight located at the Golden Lineage Evergaol in the south part of the Altus Plateau below the Grand Lift of Dectus. The evergaol is locked by an imp seal that requires a Stonesword Key to unlock, and the fight is very similar to the Godrick the Grafted fight - without a second phase.
The Godfrey Icon increases the power of charged abilities - both for Ash of War Skills, sorceries, and incantations - by 15% power.