|Map||Basic Data||Planetary Image|
|Affiliation:||Unknown, formerly Imperium|
Sabbyst was an Imperial world that was invaded by the forces of the Daemon Primarch Fulgrim sometime after the Great Rift's creation. Though the world was doomed, the Iron Hands Chapter's Clan Raukaan, led by Iron Captain Grolvoch, unexpectedly came to its aid. With their blood and lives, the Iron Hands held back Fulgrim and his forces, which allowed Sabbyst's surviving population to evacuate.