Aeldari: Wraithguard

In the Warhammer 40,000 universe, Aeldari Wraithguard are sleek, ghost-like constructs made from wraithbone and imbued with the spirit stones of deceased Aeldari warriors. Unlike living Aeldari, they are massive and nearly impervious to pain, serving as durable "bully units" that can anchor battle lines. 

Tabletop Role and Abilities
Wraithguard are elite heavy infantry designed for short-to-mid-range destruction. 

War Construct (Ability): This signature rule allows the unit to shoot back at an enemy that just targeted them, making them extremely dangerous to ignore.
Wraithsight: Due to their separation from life, they perceive realspace through the Warp as a dream, often requiring a Spiritseer to guide them for improved accuracy (+1 to hit).
Durability: They are significantly tougher than standard infantry, though they move slowly and benefit from being transported in a Wave Serpent. 
Weapon Options
The multipart plastic kit builds five models and offers two primary ranged configurations: 

Wraithcannon: An anti-tank and anti-elite weapon that fires beams of arcane energy to tear targets apart. It is highly effective at dealing massive damage to heavy armor.
D-scythe: A short-ranged weapon that banishes foes into the Warp. It typically uses "blast" rules or higher volume of fire, making it better for clearing elite infantry. 

Alternative Build: Wraithblades
The same Aeldari Wraithguard kit can alternatively be built as Wraithblades, which are specialized for melee combat: 

Ghostswords: Ideal for cutting through light-to-medium infantry with a high volume of attacks.
Ghostaxes and Forceshields: The most durable variant, providing an invulnerable save that allows the unit to act as an immovable wall on objectives.