@JeremyECrawford Does the heal blocking effect from Chill Touch prevent a slain Troll from returning to life on the following turn, or can it still "regenerate" even though it gains no hit points?
— Jake (@Jakken109) January 5, 2018
The Regeneration trait must restore at least 1 hit point for a troll, or another monster with the trait, to regenerate. #DnD https://t.co/N3Bp9EaHpJ
— Jeremy Crawford (@JeremyECrawford) January 5, 2018