After a Vampire's death, the Vampires it has created do not perish along with it. Even the Derivatives it created won't die. On the contrary, they at last gain their freedom.
When Envis died, the White Night Guards he created did not die with him. Aside from two particularly loyal Vampires who tried avenging him by harassing Leon—only to be obliterated to ash by Leon's Hand Palm Bomb—the rest scattered and fled. Leon didn't bother chasing them down one by one; it was simply too much hassle.
Envis left behind quite a haul of spoils. His weapons and shield were guaranteed to be rare-tier, if not legendary-tier. Beyond that, his cloak, gloves, boots, and rings were all Magic Items. Unfortunately, all his Potions and scrolls were destroyed in the battle.
Unless one doesn't care about loot, the Samadhi True Fire should be used sparingly. Though not as lethal as the Samadhi True Fire, the Hand Palm Bomb still packs a decent amount of power.
