Durable

Hardy and resilient, you gain the following benefits:

• Increase your Constitution score by 1, to a maximum of 20.
• When you roll a Hit Die to regain hit points, the minimum number of hit points you regain from the roll equals twice your Constitution modifier (minimum of 2).

name = 'Durable'
description = "***Feat: Durable.*** You are hardy and resilient."
def prereq(npc): return True
def apply(npc):
    npc.CON += 1
    npc.defer(lambda npc: npc.traits.append(f"***Durable.*** When you roll a Hit Die to regain hit points, you regain at least {npc.CONbonus() * 2} hit points.") )