Collector Glass Golem

Magic Resistance. The Collector Glass Golem has advantage on saving throw against spells and other magical effects.

Magic Weapons. The Collector Glass Golem's attacks are magical.

Immutable Form. The Collector Glass Golem is immune to any spell or effect that would alter its form.

Peaceful Collector. The Collector Glass Golem is incapable of attacking first. It may get into a defensive position but they will not engage in combat unless they are attacked first.

Too Big, Too Shiny. The Collector Glass Golem has disadvantage on all stealth rolls due to its size and when in any form of light it shines giving it -5 to the roll in those cases.

Collectors Knowledge. The Collector Glass Golem when given an item to collect by its master will know of the quickest and longest path to collect that item. 

Collectors Determination. The Collector Glass Golem is so determined that the natural magics built into it allows it to carry even the heaviest of things. The Collector can pull things up to 5 times its normal pulling weight with no speed reduction. The Collector can also pull anything above that weight that not fused or apart of another material like the ground at 5 feet a round. This is only for pulling things and will make it incapable of attacking while giving everything else advantage on attacking it. It takes an action to grab and let go of a creature or object in this way. Living creatures grabbed in this way are not restrained and only grappled.

Group Determination. The Collector, when over its Collectors Determination threshold can have at least two other Collectors help it allowing them to effectively move the item 15 feet a round.

Shared Glass Network. The Collectors are always able to perform simple communications with each other and their master. Should a Collector golem lose their master they will look for another one while bringing as much of their collection with them. If they lost their connection to their master at any time and can't establish a new one within 10 days, they will make large nets of the items they collected and will seek out more items of uncommon grade or higher to collect. 

Multi-attack. The Collector Glass Golem can make two Pincer Stabs.

Pincer Stab. Melee Weapon Attack: +12 to hit, reach 10 ft., 1 target. Hit: 28 (8d4 + 8) [Piercing] damage.