have you ever been in the middle of the enemies moving against one another? then you know the more you kill them the stronger they get. their level doesn't reflect the increase but they get much much stronger with every one of them you kill. plus this is obviously just a show of power as no other real area of the game spawns enemies that fast other than the raid. nova bomb does kill all the raid thralls and acolytes too by the way so this is still viable there. it kills adds in VOG as well so before the Templar is a good use of it and even in most strikes/nightfalls as longs as they aren't yellow bar enemies.