Regirock (5e Creature)
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Large construct, lawful neutral
Saving Throws Str +13, Con +10
Immutable Form. Regirock is immune to any spell or effect that would alter its form.
Magic Weapons. Regirock's weapon attacks are magical.
Clear Body. Regirock is immune to any effect that would cause it to gain disadvantage on attack rolls, ability checks, or saving throws.
Sturdy (Recharges after a Short or Long Rest). If Regirock takes 28 damage or less that would reduce it to 0 hit points, it is reduced to 1 hit point instead.
Damage Threshold. Regirock has immunity to all damage unless it takes an amount of damage that equals or exceeds 10.
Multiattack. Regirock makes three Stone Edge attacks or three Ancient Power attacks. Alternatively, it makes one Rock Wrecker attack or one Meteor Beam attack, and one Stone Edge attack or one Ancient Power attack.
Stone Edge. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 25 (4d8 + 7) bludgeoning damage.
Ancient Power. Ranged Spell Attack: range 80/320 ft. +10, one target. Hit: 20 (3d8 + 7) bludgeoning damage.
Rock Wrecker (Recharge 5-6). Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 43 (8d8 + 7) bludgeoning damage, and the target must succeed on a DC 21 Strength saving throw or fall prone.
Meteor Beam (Recharge 5-6). Ranged Spell Attack: +10 to hit, range 80/320 ft., one target. Hit: 25 (4d8 + 7) force damage, and the target must succeed on a DC 18 Constitution saving throw or be stunned until the end of its next turn.
Superpower (1/day). Regirock regains 100 hit points. Until the end of it next turn, it has disadvantage on all attack rolls, and attack rolls against it have advantage.