Vigor of the Hill Giant

Prerequisite: 4th Level, Strike of the Giants (Hill Strike) feat

Description not available (not OGL).
But here is a summary:

+1 in Str., Con., or Wis. ; resistance to be prone ; Hit Dice to regain additional hit points equals to your Con. modifier + PB.
Glory of the Giants
  1. DnD 5e Feats › Vigor of the Hill Giant