SlamDance, Inc. Spawnblade

The SlamDance, Inc. Spawnblade is a melee weapon that looks much like any combat knife that has been balanced for throwing (1d6+BOD modifier damage).

The differences manifest only in combat. Once the safety is disabled, the Spawnblade's memory-metal blade has the ability to "fan out" its cutting edges. On any combat hit that does more than 4 points of damage (including BOD bonuses to damage, but before BTM) and gets past the opponent's armor, the Spawnblade can be triggered.

The blade spreads into a razor-sharp 50-degree spatula - inside the opponent's body. This does an additional 1d6+3, ignoring armor. Once opened, the Spawnblade can only be safely removed with a Medtech roll of 20; any other means of removal will cause the victim another 1d6/2 damage.

The Spawnblade comes with a safety sheath in a choice of designer colors.

Source

 * Blackhand's Street Weapons 2020, p.4