Large Troll, Any Non-good
Unique Traits.
Regeneration.
At the start of its next turn, Trolls regenerate 20 hit points, as long as it hadn't taken any fire damage prior to its next turn. If the Troll has received fire damage of any amount, the regeneration trait fails.
Keen Smell.
Trolls have advantage on Wisdom (Perception) checks that rely on smell.
Multiattack. A Stone Troll can make two attacks with its warhammer, the Skullbreaka.
Skullbreaka. +7 to hit, single target. Topple mastery. 5 ft. range, 10 1d12+4 Bludgeon damage.