arachnid clockwork horror

variable resistances. The clockwork horror chooses one of the following to be resistant to fire, cold, acid, lightning, thunder. as a bonus action it can change it.

Hive mind. All clockwork horrors that can see each other can communicate telepathically regardless of distance.

claw. Melee Weapon Attack: +4 to hit, reach 5 ft., 1 target. Hit: 6  (1d8 + 2) slashing  damage. 

Replicate. if a target within 5ft of the target is on 1/4th of there hit points or less after and attack the clockwork horror can use its reaction to make a replication of itself with all the same stats but doesn't have this ability. This new horror has to roll its own initiative.