Does the Stone Golem have the Damage Threshold mechanic/trait that some people have been speculating that Constructs might have?
Nope. Just a lot of HP.
Comparison time!
Stone Golem (2014)
Large Construct, Unaligned
Armor Class 17 (natural armor)
Hit Points 178 (17d10 + 85)
Speed 30 ft.
STR 22 (+6) DEX 9 (-1) CON 20 (+5)
INT 3 (-4) WIS 11 (+0) CHA 1 (-5)
Damage Immunities Poison, Psychic; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Adamantine
Condition Immunities Charmed, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned
Senses Darkvision 120 ft., Passive Perception 10
Languages Understands the languages of its creator but can't speak
Challenge 10 (5,900 XP)
Proficiency Bonus +4
Immutable Form. The golem is immune to any spell or effect that would alter its form.
Magic Resistance. The golem has advantage on saving throws against spells and other magical effects.
Magic Weapons. The golem's weapon attacks are magical.
Actions
Multiattack. The golem makes two slam attacks.
Slam. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 19 (3d8 + 6) bludgeoning damage.
Slow (Recharge 5–6). The golem targets one or more creatures it can see within 10 feet of it. Each target must make a DC 17 Wisdom saving throw against this magic. On a failed save, a target can't use reactions, its speed is halved, and it can't make more than one attack on its turn. In addition, the target can take either an action or a bonus action on its turn, not both. These effects last for 1 minute. A target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
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Stone Golem (2024)
Large Construct, Unaligned
AC 18 Initiative +3 (13)
HP 252 (24d10 + 120)
Speed 30 ft.
MOD SAVE
STR 22 +6 +6
DEX 9 −1 −1
CON 20 +5 +5
INT 3 −4 −4
WIS 11 +0 +0
CHA 1 −5 −5
Immunities Poison, Psychic; Charmed, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned
Senses Darkvision 120 ft., Passive Perception 10
Languages Understands Common plus two other languages but can’t speak
CR 10 (XP 5,900; PB +4)
Traits
Immutable Form. The golem can’t shape-shift.
Magic Resistance. The golem has Advantage on saving throws against spells and other magical effects.
Actions
Multiattack. The golem makes two attacks, using Slam or Force Bolt in any combination.
Slam. Melee Attack Roll: +10, reach 5 ft. Hit: 15 (2d8 + 6) Bludgeoning damage plus 9 (2d8) Force damage.
Force Bolt. Ranged Attack Roll: +9, range 90 ft. Hit: 26 (4d12) Force damage.
Slow (Recharge 5–6). The golem casts Slow (spell save DC 17), requiring no spell components and using Constitution as the spellcasting ability.