Void shards are NPC structures in StarCraft II: Legacy of the Void.
Void shards generate a large field of Void energy around them, causing all units that enter it to take damage over time. The void shards also generate portals to the void when attacked that spawn enemies to defend it. The final three void shards will have an area of attack ability, akin to the attacks of a Void thrasher. They will also fire red beams that levitate and instantly kill mechanical units regardless of health and shields, similar to Kerrigan's Implosion ability from "All In".
When attacking a Void shard, concentrate on destroying it instead of the enemies spawned; the shard's destruction will stop the enemy forces from reinforcing their numbers and will eliminate the field of Void energy damaging the player's units.
Each time a void shard is destroyed, the remaining shards' shields will increase. The rate of damage inflicted on surrounding units also increases.
In "Rifts to Korhal," void shards spawn at set points on the map, and will attack the player's forces with a small area of effect attack. The attack will damage the player's units and stun them for a short time, akin to the attacks of Oblivion Constructs.