Darksiders Genesis · War elemental enhancement
Thunderclap
Thunderclap is an elemental enhancement for War that the guide says Vulgrim sells after Chapter 1.
How it works
The guide lists Thunderclap as purchasable from Vulgrim after completing Chapter 1, Dethroned, for 3500 Souls and 10 Boatman Coins. It does not describe a specific combat effect for the enhancement. Its general note says each new War elemental enhancement slightly increases overall DPS, but no numeric amount is given.
Read the supporting references
Check the edition and source version for patch-specific details. Guide methodology.