Shard of Anaris
The Shard of Anaris is an Eldar artifact. When Khaine slew Eldanesh, he took the sword of Anaris and claimed it as his own. However, when Khaine was shattered in battle with Slaanesh, the sword was also splintered. The shards of the blade have come to rest on many Craftworlds, and legend tells that the shard of Anaris was then crafted into a blade to be borne by the craftworld's mightiest warriors.