OGC:Grinder (5e Creature)
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Large construct, unaligned
Skills Perception +4
Barging. The grinder is able to move into a square occupied by another creature, making a Strength check opposed by the creature’s Strength (Athletics) or Dexterity (Acrobatics) check. On a success, the creature is ripped under the grinder and can be targeted by its Crush attack. On a failure against a creature that resists with Strength (Athletics), the grinder is pushed back 5 feet and cannot move again until the start of its next turn. On a failure against a creature that resists with Dexterity (Acrobatics), the creature uses its reaction to move up to half its speed or is targeted by the grinder’s Crush attack.
Illusion-Proof. The grinder is immune to figments. invisibility and other illusion spells that do not create figments affect the grinder normally.
Overclock (Recharge 6). The grinder takes the Dash action as a bonus action on its turn.
Reverse Arm (Recharge 6). The grinder lifts its crushing arm over its body, switching its front and back and reversing its facing by 180 degrees.
Rolling Cover. The grinder has three-quarters cover from creatures facing its front (+5 bonus to AC and Dexterity saving throws).
Multiattack. The grinder attacks twice. It cannot attack the same target more than once in the same turn.
Crush. Melee Weapon Attack: +9 to hit, reach 0 ft., one target. Hit: 50 (10d8 + 5) bludgeoning damage and the target is pushed 10 feet behind the grinder. A DC 17 Dexterity saving throw halves this damage. Dwarves and Small-sized creatures have advantage on this save. Creatures smaller than Small size cannot be targeted by this attack.
The grinder is a myth and tall tale told by dungeon delvers the world over, and stories of it are especially common in taverns near dwarf settlements. The tales of explorers being crushed beneath its tread are not exaggerations, however, and only the bravest or best equipped adventurers face off against one of these constructs—usually panicking when they realize it can reorient itself and run over victims multiple times.